High-power turboprop engine preassembling device and test run method

Abstract

The invention discloses a high-power turboprop engine preassembling device and a test run method, which are used for preassembling a high-power turboprop engine, and the high-power turboprop engine comprises an engine main body, a propeller and a test structure, the preassembling device comprises a preassembling frame used for supporting, a height adjusting structure arranged on the preassembling frame and an installing frame used for being detachably connected with the height adjusting structure, the preassembling frame is used for being installed in a test preparation room so as to preassemble the installing frame and the high-power turboprop engine, and the height adjusting structure is used for adjusting the vertical height of the installing frame when the installing frame is preassembled. The mounting rack is used for mounting the engine main body in a cantilever manner and mounting the propeller and the test structure on the engine main body after being connected with the height adjusting structure, and then hoisting the engine main body into a test room after being separated from the height adjusting structure; the preassembling requirement of the high-power turboprop engine is met, rapid reloading and preassembling of the high-power turboprop engine are achieved, and the utilization rate of a test bed is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of turboprop engine test equipment, and in particular, to a pre-installation device for high-power turboprop engines. In addition, it also relates to a test method using the above-mentioned pre-installation device for high-power turboprop engines. Background Art

[0002] As the core component of an aircraft, the performance of an aeroengine directly determines the overall performance of the aircraft. In order to test the performance of an aeroengine, an aeroengine test stand is usually used as an important facility platform in the design, R & D, production and manufacturing processes of the aeroengine to adapt to the test verification work in the development process of various types of aeroengines.

[0003] As a common engine for large aircraft, a high-power turboprop engine has a large intake air flow rate, usually up to 1800 kg / s. To ensure the requirements and stability of the intake air flow field during the test, a cantilever installation method is generally adopted during the test, that is, the mounting frame, the engine body and the propeller are separately hoisted onto and off the test room. The specific process is that after the mounting frame is assembled onto the moving frame, the engine body is hoisted into the air for in-air assembly, and finally the propeller is hoisted and assembled onto the engine body. The construction of the crane system for this assembly method is simple and the cost is low. However, the operating personnel have a long time of working at height. When the test tasks are heavy, the use efficiency of the test stand is low. This is because due to the complexity of the external structure of the engine body and diverse test requirements, the assembly difficulty of the interface between the engine body and the mounting frame is large, and multiple hoistings are required to complete the installation. Moreover, in-air hoisting requires high-precision hoisting technology and has a large installation difficulty. At the same time, due to the test and measurement requirements, a large number of measuring points and pipelines need to be arranged on the engine body. If all are completed at height, the personnel have a long time of working at height, and because a large number of auxiliary tools are required, they need to frequently go up and down the high platform, posing a great safety risk.

[0004] For example, Chinese Patent Application CN115389206A discloses an aeroengine pre-installation device and a pre-installation method, including a frame body, an installation mechanism, a detachable mounting seat, an installation structure adapted to the test stand frame, an adjustment component and a centering mechanism. While one group of personnel is performing the test process, another group of personnel is performing pre-installation on the pre-installation device, and after the test is completed, the device is pushed to the test stand.

[0005] However, although the above-mentioned pre-installation device can reduce the test installation time to a certain extent, it mainly meets the centering requirements of a turboshaft or turbojet engine through pre-installation. A high-power turboprop engine does not require centering. Moreover, if this pre-installation device is used to install a high-power turboprop engine, its overall installation structure will be unstable due to the limitation of the propeller diameter, and there may be a risk of pitching forward. Therefore, it cannot meet the pre-installation requirements of a high-power turboprop engine and is not applicable to a high-power turboprop engine. Summary of the Invention

[0006] The present invention provides a pre-assembly device and a test run method for a high-power turboprop engine, so as to solve the technical problems that the existing high-power turboprop engine has a long time for hoisting and lowering, the test bench has low use efficiency, or the existing pre-assembly device is not applicable to high-power turboprop engines.

[0007] According to one aspect of the present invention, there is provided a pre-assembly device for a high-power turboprop engine, which is used for pre-assembling a high-power turboprop engine. The high-power turboprop engine includes an engine main body, a propeller and a test structure. The pre-assembly device includes a pre-assembly frame for support, a height adjustment structure arranged on the pre-assembly frame, and a mounting frame detachably connected to the height adjustment structure. The pre-assembly frame is used to be installed in a test preparation room for pre-assembling the mounting frame and the high-power turboprop engine. The height adjustment structure is used to adjust the vertical height of the mounting frame during pre-assembly to prevent interference in the vertical plane during propeller installation. The mounting frame is used to cantilever-mounted the engine main body and install the propeller and the test structure on the engine main body after being connected to the height adjustment structure, and then be hoisted into the test room after being separated from the height adjustment structure.

[0008] As a further improvement of the above technical solution: Further, the pre-assembly frame includes two first skeletons arranged vertically and at intervals, a second skeleton arranged horizontally on the tops of the two first skeletons, a third skeleton arranged obliquely and connected to the two first skeletons, a first reinforcing rib arranged horizontally and connected to the first skeleton and the second skeleton respectively, a second reinforcing rib arranged obliquely and connected to the first skeleton and the second skeleton respectively, and a third reinforcing rib arranged obliquely and connected to the second skeleton and the third skeleton respectively.

[0009] Further, the height adjustment structure includes a track system arranged on the first skeleton for plug-in fit with the horizontal end of the mounting frame in the vertical direction, a connecting plate slidably arranged vertically on the track system for supporting the mounting frame from the bottom to drive the mounting frame to move vertically, and a height adjustment driving member arranged on the second skeleton with its movable end connected to the connecting plate for driving the connecting plate to slide vertically. The track system and the first skeleton are arranged in one-to-one correspondence.

[0010] Further, the track system includes a track skeleton arranged on the first skeleton for plug-in fit with the horizontal end of the mounting frame in the vertical direction, two sliding tracks respectively arranged on the outer sides of the two sides of the track skeleton, and a sliding member slidably sleeved on the two sliding tracks and connected to the connecting plate.

[0011] Further, a rolling bearing I, a connecting rod, and two rolling bearings II are arranged inside the track framework. The connecting rod is respectively connected to the rolling bearing I and the inner wall of the track framework. The two rolling bearings II are respectively connected to the two opposite inner walls of the rolling framework. The rolling bearing I and the two rolling bearings II are arranged in a triangular pattern in the horizontal plane and are all used for rolling cooperation with the horizontal ends of the mounting frame.

[0012] Further, the sliding member includes a sliding outer shell sleeved outside the two sliding tracks and connected to the connecting plate, a rolling bearing III arranged inside the sliding outer shell and in rolling cooperation with the sliding tracks, and a connecting rod II respectively connected to the rolling bearing III and the sliding outer shell. The sliding tracks, the rolling bearing III, and the connecting rod II are arranged in one-to-one correspondence.

[0013] Further, a plurality of positioning holes are vertically formed in the track framework at intervals. The sliding outer shell is provided with mounting holes corresponding to the positioning holes. The height adjustment structure further includes a positioning pin for sequentially inserting into the mounting hole and the positioning hole after height adjustment.

[0014] Further, the pre-installation frame includes a pre-installation platform, two support frames arranged at intervals on the pre-installation platform, and a cross tie rod respectively connected to the two support frames.

[0015] Further, the height adjustment structure includes a mounting plate arranged on the support frame, an ear support detachably connected to the bottom of the mounting frame, a plurality of fixing holes I vertically formed in the mounting plate, a fixing hole II formed in the ear support corresponding to the fixing holes I, and a fixing bolt for sequentially inserting into the fixing hole II and the fixing hole I after height adjustment.

[0016] According to another aspect of the present invention, there is also provided a test method for a high-power turboprop engine, which uses the above-mentioned high-power turboprop engine pre-installation device, and includes the following steps: S1, in the preparation room, select and set the vertical height according to the specifications of the propeller in the current high-power turboprop engine to be tested, and install the mounting frame on the height adjustment structure of the pre-installation frame based on the set vertical height; S2, install the engine main body on the mounting frame, and then install the propeller and the test structure on the engine main body respectively; S3, after the hoisting equipment hoists the mounting frame, separate the mounting frame from the height adjustment structure, and then hoist and transfer the mounting frame to the test room for testing the current high-power turboprop engine to be tested. At the same time, in the preparation room, pre-install the next high-power turboprop engine to be tested.

[0017] The present invention has the following beneficial effects: The pre - installation device for high - power turboprop engines of the present invention installs a pre - installation rack in the preparation room, and arranges a height - adjusting structure on the pre - installation rack. By connecting the installation rack through the height - adjusting structure, the engine main body can be installed on the installation rack in a cantilever - type manner in advance. Then, the propeller and the test structure are installed on the engine main body, thereby enabling the interference problems during the installation of high - power turboprop engines to be detected and solved in advance. That is, part of the modification work is transferred from the test room to the preparation piece, improving the modification efficiency, reducing the occupation time of the test room, and realizing the pre - installation of high - power turboprop engines. During pre - installation, the vertical height of the installation rack is adjusted through the height - adjusting structure to prevent interference in the vertical plane during the installation of the propeller, so as to meet the pre - installation requirements of propellers of different specifications. After pre - installation, by separating the installation rack from the height - adjusting structure, and then using a lifting device to hoist the installation rack onto the test bench in the test room for test verification. Since the installation rack installs the engine main body in a cantilever - type manner, the stability of the inlet air flow field during the test is ensured, meeting the pre - installation requirements of high - power turboprop engines. At the same time, another high - power turboprop engine can be pre - installed in the preparation room. This solution separates the test and the installation and removal of high - power turboprop engines, effectively reducing the occupation time of the test bench in the non - test state of high - power turboprop engines, improving the utilization rate and versatility of the test bench. At the same time, it reduces the operation time and high - altitude operation time of the operator during the installation and removal process, reducing the safety risk and labor intensity. Compared with the prior art, it meets the pre - installation requirements of high - power turboprop engines, realizes the rapid replacement and pre - installation of high - power turboprop engines, improves the utilization rate of the test bench, has strong practicability, and is suitable for wide promotion and application.

[0018] In addition to the purposes, features, and advantages described above, the present invention has other purposes, features, and advantages. The following will refer to the drawings for a more detailed description of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 is the three - dimensional structural schematic diagram of the pre - installation device for high - power turboprop engines in the first preferred embodiment of the present invention during pre - installation; Figure 2 is Figure 1 the structural schematic diagram of the pre - installation device for high - power turboprop engines shown in the first perspective; Figure 3 is Figure 1 the structural schematic diagram of the pre - installation device for high - power turboprop engines shown in the second perspective; Figure 4 is Figure 1 the partial structural schematic diagram of the pre - installation device for high - power turboprop engines shown; Figure 5 is Figure 4 a partial enlarged view of the local structure of the high-power turboprop engine pre-installation device shown; Figure 6 is a three-dimensional structure schematic diagram of the high-power turboprop engine pre-installation device during pre-installation in the second preferred embodiment of the present invention; Figure 7 is a partial enlarged view of the local structure of the high-power turboprop engine pre-installation device during pre-installation in the second preferred embodiment of the present invention; Figure 8 is a structure schematic diagram of the high-power turboprop engine pre-installation device during pre-installation in the third preferred embodiment of the present invention.

[0020] Legend: 100, pre-installation frame; 111, first skeleton; 112, second skeleton; 113, third skeleton; 114, first reinforcing rib; 115, second reinforcing rib; 116, third reinforcing rib; 117, counterweight; 121, pre-installation platform; 122, support frame; 123, cross tie rod; 124, diagonal support; 125, reinforcing rib; 200, mounting frame; 300, height adjustment structure; 310, track system; 311, track skeleton; 312, sliding track; 313, rolling bearing one; 314, connecting rod one; 315, rolling bearing two; 316, sliding outer shell; 317, rolling bearing three; 318, connecting rod two; 320, connecting plate; 330, motor; 340, wheel disc mechanism; 350, height adjustment rope; 360, positioning pin; 370, ear; 380, mounting plate; 400, mobile escalator. Detailed implementation manners

[0021] The following will describe the embodiments of the present invention in detail with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the following.

[0022] The terms "first" and "second" etc. in the specification, claims and drawings of this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or devices.

[0023] Embodiment 1: As Figures 1 - 3As shown in the figure, the pre-assembly device for a high-power turboprop engine in this embodiment is used for pre-assembling a high-power turboprop engine. The high-power turboprop engine includes an engine main body, a propeller, and a test structure. The pre-assembly device includes a pre-assembly frame 100 for support, a height-adjusting structure 300 disposed on the pre-assembly frame 100, and a mounting frame 200 detachably connected to the height-adjusting structure 300. The pre-assembly frame 100 is used to be installed in a preparation room for pre-assembling the mounting frame 200 and the high-power turboprop engine. The height-adjusting structure 300 is used to adjust the vertical height of the mounting frame 200 during pre-assembly of the mounting frame 200 to prevent interference in the vertical plane during propeller installation. The mounting frame 200 is used to cantilever-mounted the engine main body and install the propeller and the test structure on the engine main body after being connected to the height-adjusting structure 300, and then be hoisted into the test room after being separated from the height-adjusting structure 300.

[0024] As Figures 1 - 3 shown, specifically, for the pre-assembly device of the high-power turboprop engine of the present invention, by installing the pre-assembly frame 100 in the preparation room and arranging the height-adjusting structure 300 on the pre-assembly frame 100 to connect the mounting frame 200 through the height-adjusting structure 300, the engine main body can be installed on the mounting frame 200 in a cantilever manner in advance, and then the propeller and the test structure can be installed on the engine main body, so as to effectively detect and solve the interference problem during the installation of the high-power turboprop engine in advance, that is, transfer part of the modification work of this engine to the preparation room, improve the modification efficiency, reduce the occupation time of the test room, and realize the pre-assembly of the high-power turboprop engine; during pre-assembly, the vertical height of the mounting frame 200 is adjusted through the height-adjusting structure 300 to prevent interference in the vertical plane during propeller installation to meet the pre-assembly requirements of propellers of different specifications: after pre-assembly is completed, by separating the mounting frame 200 from the height-adjusting structure 300, and then hoisting the mounting frame 200 onto the test bench in the test room through a hoisting device for test verification. Since the mounting frame 200 is used to cantilever-mount the engine main body, the stability of the inlet air flow field during the test is ensured, meeting the pre-assembly requirements of the high-power turboprop engine. At the same time, another high-power turboprop engine can be pre-assembled in the preparation room; this solution separates the test of the high-power turboprop engine from the engine changeover to effectively reduce the occupation time of the test bench in the non-test state of the high-power turboprop engine, improve the utilization rate and versatility of the test bench; at the same time, reduce the operation time and high-altitude operation time of the operator during the engine changeover process, reduce the safety risk and labor intensity; compared with the prior art, it meets the pre-assembly requirements of the high-power turboprop engine, realizes the rapid replacement and pre-assembly of the high-power turboprop engine, improves the utilization rate of the test bench, has strong practicability, and is suitable for wide promotion and application.

[0025] It should be understood that the test structure is the measuring points and pipelines installed on the engine main body to meet the test requirements. By completing the pre-installation of the test structure in the preparation room, the occupation time of the test bench is greatly reduced.

[0026] As Figure 4 shown, in this embodiment, the pre-installation frame 100 includes two first skeletons 111 arranged vertically and at intervals, a second skeleton 112 arranged horizontally on the tops of the two first skeletons 111, a third skeleton 113 arranged obliquely and connected to the two first skeletons 111, a first reinforcing rib 114 arranged horizontally and connected to the first skeleton 111 and the second skeleton 112 respectively, a second reinforcing rib 115 arranged obliquely and connected to the first skeleton 111 and the second skeleton 112 respectively, and a third reinforcing rib 116 arranged obliquely and connected to the second skeleton 112 and the third skeleton 113 respectively. Specifically, a main body for support is formed by the two first skeletons 111, one second skeleton 112 and one third skeleton 113, and then the first reinforcing rib 114 is welded between the first skeleton 111 and the second skeleton 112, the second reinforcing rib 115 is welded between the first skeleton 111 and the second skeleton 112, and the third reinforcing rib 116 is welded between the second skeleton 112 and the third skeleton 113 to form a plurality of triangular structures to ensure the stability of the overall structure of the pre-installation frame 100, thereby realizing the stable pre-installation of the high-power turboprop engine.

[0027] As Figure 4 and Figure 5 shown, in this embodiment, the height adjustment structure 300 includes a track system 310 arranged on the first skeleton 111 for plug-in fit with the end part in the horizontal direction of the mounting frame 200 in the vertical direction, a connecting plate 320 slidably arranged vertically on the track system 310 for supporting the mounting frame 200 from the bottom to drive the mounting frame 200 to move vertically, and a height adjustment driving member arranged on the second skeleton 112 and having a movable end connected to the connecting plate 320 for driving the connecting plate 320 to slide vertically. The track system 310 and the first skeleton 111 are arranged in one-to-one correspondence. Specifically, after the end part in the horizontal direction of the mounting frame 200 is plugged in fit with the track system 310 in the vertical direction, the bottom of the end part in the horizontal direction of the mounting frame 200 abuts against the connecting plate 320, so as to drive the connecting plate 320 to slide vertically through the height adjustment driving member, and then the mounting frame 200 can be driven to move vertically, thereby adjusting the vertical height of the mounting frame 200, preventing interference in the vertical plane during the installation of the propeller, and meeting the pre-installation requirements of propellers of different specifications; the track system 310 and the first skeleton 111 are arranged in one-to-one correspondence, that is, two track systems 310 are arranged at intervals and are plugged in fit with the mounting frame 200 at the same time to realize the horizontal limit of the mounting frame 200; and since the height adjustment structure 300 is only connected to the end part in the horizontal direction of the mounting frame 200, the mounting frame 200 is arranged suspended relative to the pre-installation frame 100, so as to have a large amount of installation space, which is convenient for the installation of the engine main body, the propeller and the test structure, and improves the pre-installation efficiency.

[0028] As Figure 4 and Figure 5 shown, in this embodiment, the height adjustment driving member includes a motor 330, a disk mechanism 340, and a height adjustment rope 350 sleeved outside the disk mechanism 340 and connected to the motor 330 and the connecting plate 320 respectively. By operating the motor 330, the disk mechanism 340 changes the movement direction of the height adjustment rope 350, and then drives the connecting plate 320 to vertically slide along with the height adjustment rope 350, so as to adjust the vertical height of the mounting frame 200.

[0029] As Figure 4 shown, in this embodiment, a counterweight 117 is arranged on the connecting plate 320 to ensure the stability of the overall structure of the pre-mounted frame 100 and the mounting frame 200.

[0030] As Figure 4 and Figure 5 shown, in this embodiment, the track system 310 includes a track skeleton 311 arranged on the first skeleton 111 and used for vertically plugging and matching with the horizontal end of the mounting frame 200, two sliding tracks 312 respectively arranged on the two outer sides of the track skeleton 311, and a sliding member slidably sleeved outside the two sliding tracks 312 and connected to the connecting plate 320. Specifically, the track skeleton 311 is vertically plugged and matched with the horizontal end of the mounting frame 200, and then the sliding member is reliably installed through the two sliding tracks 312. By sliding the sliding member relative to the sliding tracks 312, the connecting plate 320 can move vertically to adjust the vertical height of the mounting frame 200.

[0031] As Figure 4 and Figure 5 shown, in this embodiment, a first rolling bearing 313, a first connecting rod 314, and two second rolling bearings 315 are arranged in the track skeleton 311. The first connecting rod 314 is respectively connected to the first rolling bearing 313 and the inner wall of the track skeleton 311, and the two second rolling bearings 315 are respectively connected to the two opposite inner walls of the rolling skeleton. The first rolling bearing 313 and the two second rolling bearings 315 are arranged in a triangular pattern in the horizontal plane and are all used for rolling cooperation with the horizontal end of the mounting frame 200. Specifically, the positioning of the mounting frame 200 is realized through the first rolling bearing 313 and the two second rolling bearings 315 arranged in a triangular pattern in the horizontal plane. When the mounting frame 200 moves vertically, the friction resistance is reduced through rolling cooperation, which facilitates the smooth movement of the mounting frame 200 in the vertical direction and avoids interference and jamming.

[0032] As Figure 4 and Figure 5As shown, in this embodiment, the sliding member includes a sliding housing 316 sleeved outside the two sliding rails 312 and connected to the connecting plate 320, a rolling bearing 317 arranged in the sliding housing 316 and rolling-matched with the sliding rails 312, and a connecting rod 2 318 connected to the rolling bearing 317 and the sliding housing 316 respectively, and the sliding rails 312, the rolling bearing 317 and the connecting rod 2 318 are arranged in a one-to-one correspondence. Specifically, when the connecting plate 320 moves vertically, the sliding housing 316 moves relative to the sliding rails 312, and the rolling bearing 317 converts the linear fit friction into rolling fit friction, which greatly reduces the friction resistance, facilitates the smooth movement of the connecting plate 320 in the vertical direction, and avoids obstacles.

[0033] In this embodiment, a plurality of positioning holes arranged at intervals are vertically provided on the track frame 311, and a mounting hole corresponding to the positioning hole is provided on the sliding housing 316, and the height adjustment structure 300 further includes a positioning pin 360 for sequentially inserting into the mounting hole and the positioning hole after height adjustment. Specifically, when the mounting frame 200 is adjusted to a suitable vertical height, the positioning pin 360 is sequentially inserted into the mounting hole and the positioning hole to fix the sliding member, thereby preventing the mounting frame 200 from moving vertically during the pre-installation process, and ensuring the stability of the overall structure.

[0034] like Figure 1 As shown, in this embodiment, the mounting frame 200 includes a U-shaped plate 1, a U-shaped plate 2, an adapter plate, a tie rod assembly 1 respectively connected to the U-shaped plate 1 and the U-shaped plate 2, and a tie rod assembly 2 respectively connected to the U-shaped plate 2 and the adapter plate. The U-shaped plate 1 and the U-shaped plate 2 enclose a storage space to install the engine body, and the adapter plate is plugged into and matched with the rail system 310.

[0035] Embodiment 2: like Figure 6 As shown, the difference between this embodiment and the first embodiment is that the pre-installation frame 100 includes a pre-installation platform 121, two support frames 122 arranged at intervals on the pre-installation platform 121, and a tie rod 123 respectively connected to the two support frames 122. Specifically, the pre-installation frame 100 is entirely made of I-beams, and the structural strength is guaranteed. The two support frames are arranged at intervals on the pre-installation platform 121 through expansion bolts, and then the two support frames 122 are connected through the tie rod 123 to form an integral structure, and the space between the two support frames is used to install the engine body.

[0036] like Figure 6 As shown, in this embodiment, the support frame 122 includes a plurality of vertical supports arranged at intervals, an oblique support 124 connected to one of the vertical supports, a top cross beam connected to the plurality of vertical supports respectively, and reinforcing ribs 125 connected to the vertical supports and the top cross beam respectively, so as to enhance the structural stability through the reinforcing ribs 125 and the oblique supports 124.

[0037] As Figure 7 shown, in this embodiment, the height adjustment structure 300 includes a mounting plate 380 disposed on the support frame 122, an ear 370 detachably connected to the bottom of the mounting frame 200, a plurality of first fixing holes vertically formed on the mounting plate 380, a second fixing hole formed on the ear 370 for corresponding arrangement with the first fixing holes, and a fixing bolt for sequentially inserting into the second fixing hole and the first fixing hole after height adjustment. Specifically, the height adjustment structure 300 includes four ears 370. The four feet of the U-shaped plate one and the U-shaped plate two of the mounting frame 200 are respectively placed on the four ears 370. Connecting holes are drilled on the ears 370, the U-shaped plate one and the U-shaped plate two. After the U-shaped plate one and the U-shaped plate two are placed in appropriate positions, they are fixedly connected by inserting a plug pin. In order to ensure that there is no interference of the propeller in the vertical plane during installation, the second fixing hole on the ear 370 corresponds to the first fixing holes at different heights on the mounting plate 380, and after being locked by the fixing bolt, the ear 370 can be fixed at an appropriate vertical height, and then the mounting frame 200 and the propeller can be fixed at an appropriate vertical height.

[0038] As Figure 7 shown, in this embodiment, the ears 370 are arranged in a triangular shape to ensure the structural stability.

[0039] Embodiment Three: As Figure 8 shown, the difference between this embodiment and Embodiment Two is that the pre-installation device further includes a mobile escalator 400 disposed in the test room to facilitate the operator to pre-install the high-power turboprop engine through the mobile escalator 400.

[0040] The test run method of the high-power turboprop engine in this embodiment adopts the above-mentioned pre-installation device for the high-power turboprop engine, and includes the following steps: S1. In the preparation room, select and set the vertical height according to the specifications of the propeller in the high-power turboprop engine to be tested, and install the mounting frame 200 on the height-adjusting structure 300 of the pre-installation frame 100 based on the set vertical height; S2. Install the engine body on the mounting frame 200, and then install the propeller and the test structure on the engine body respectively; S3. After the hoisting equipment hoists and connects the mounting frame 200, separate the mounting frame 200 from the height-adjusting structure 300, and then hoist and transfer the mounting frame 200 into the test room to conduct the test run of the high-power turboprop engine to be tested. At the same time, in the preparation room, pre-install the next high-power turboprop engine to be tested. Specifically, by adopting the test run method of this embodiment, during the test of the previous high-power turboprop engine, the pre-installation of the next high-power turboprop engine can be carried out synchronously in the preparation room. After the test of the previous high-power turboprop engine is completed, the assembly of the next high-power turboprop engine can be quickly carried out, and the pre-installation requirements of the high-power turboprop engine are met during pre-installation, so as to effectively reduce the occupancy time of the high-power turboprop engine in the non-test state, improve the utilization rate and versatility of the test stand; at the same time, reduce the operation time and high-altitude operation time of the operator during the process of changing engines, and reduce the safety risk and labor intensity.

[0041] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0042] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0043] Specific examples are used in this article to elaborate on the principles and implementation methods of this application. The description of the above examples is only used to help understand the method and its core idea of this application. The above are only the preferred implementation methods of this application. It should be pointed out that due to the limited nature of written expression and the objectively infinite specific structures, for those of ordinary skill in the art of this technology, without departing from the principle of this application, several improvements, refinements or changes can also be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of this application to other occasions without improvement, should all be regarded as the protection of this application.

Claims

1. A pre-assembly device for a high-power turboprop engine, which is used for the pre-assembly of a high-power turboprop engine. The high-power turboprop engine includes an engine main body, a propeller and a test structure, and is characterized in that The pre-installation device includes a pre-installation frame (100) for support, a height adjustment structure (300) arranged on the pre-installation frame (100), and a mounting frame (200) detachably connected to the height adjustment structure (300). The pre-installation frame (100) is used to be installed in the test room for pre-installing the mounting frame (200) and the high-power turboprop engine. The height adjustment structure (300) is used to adjust the vertical height of the mounting frame (200) during the pre-installation of the mounting frame (200) to prevent interference in the vertical plane during the installation of the propeller. The mounting frame (200) is used to cantilever-mounted the engine body and install the propeller and the test structure on the engine body after being connected to the height adjustment structure (300), and then be hoisted into the test room after being separated from the height adjustment structure (300).

2. The pre-assembly device for a high-power turboprop engine according to claim 1, wherein The pre-installation frame (100) includes two first skeletons (111) arranged vertically and at intervals, a second skeleton (112) arranged horizontally on the tops of the two first skeletons (111), a third skeleton (113) arranged obliquely and connected to the two first skeletons (111), a first reinforcing rib (114) arranged horizontally and connected to the first skeleton (111) and the second skeleton (112) respectively, a second reinforcing rib (115) arranged obliquely and connected to the first skeleton (111) and the second skeleton (112) respectively, and a third reinforcing rib (116) arranged obliquely and connected to the second skeleton (112) and the third skeleton (113) respectively.

3. The pre-installation device for a high-power turboprop engine according to claim 2, characterized in that, The height adjustment structure (300) includes a track system (310) arranged on the first skeleton (111) for plug-in fit with the end of the mounting frame (200) in the horizontal direction in the vertical direction, a connecting plate (320) slidably arranged vertically on the track system (310) for supporting the mounting frame (200) from the bottom to drive the mounting frame (200) to move vertically, and a height adjustment driving member arranged on the second skeleton (112) with its movable end connected to the connecting plate (320) for driving the connecting plate (320) to slide vertically. The track system (310) and the first skeleton (111) are arranged in one-to-one correspondence.

4. The pre-assembly device for high-power turboprop engines according to claim 3, characterized in that The track system (310) includes a track skeleton (311) arranged on the first skeleton (111) for plug-in fit with the end of the mounting frame (200) in the horizontal direction in the vertical direction, two sliding tracks (312) respectively arranged on the two outer sides of the track skeleton (311), and a sliding member slidably sleeved on the two outer sliding tracks (312) and connected to the connecting plate (320).

5. The pre-assembly device for a high-power turboprop engine according to claim 4, characterized in that, A first rolling bearing (313), a first connecting rod (314) and two second rolling bearings (315) are arranged in the track skeleton (311). The first connecting rod (314) is respectively connected to the first rolling bearing (313) and the inner wall of the track skeleton (311). The two second rolling bearings (315) are respectively connected to the two opposite inner walls of the rolling skeleton. The first rolling bearing (313) and the two second rolling bearings (315) are arranged in a triangular pattern in the horizontal plane and are all used for rolling cooperation with the end of the mounting frame (200) in the horizontal direction.

6. The pre-assembly device for a high-power turboprop engine according to claim 4, characterized in that, The sliding member includes a sliding outer shell (316) sleeved outside two sliding tracks (312) and connected to the connecting plate (320), a third rolling bearing (317) disposed inside the sliding outer shell (316) and in rolling cooperation with the sliding tracks (312), and a second connecting rod (318) respectively connected to the third rolling bearing (317) and the sliding outer shell (316). The sliding tracks (312), the third rolling bearing (317), and the second connecting rod (318) are arranged in one-to-one correspondence.

7. The pre-assembly device for high-power turboprop engines according to claim 6, characterized in that A plurality of positioning holes spaced apart are vertically formed on the track skeleton (311). The sliding outer shell (316) is provided with mounting holes for corresponding arrangement with the positioning holes. The height adjustment structure (300) further includes a positioning pin (360) that is sequentially inserted into the mounting hole and the positioning hole after height adjustment.

8. The pre-installation device for high-power turboprop engines according to claim 1, wherein, The pre-installation frame (100) includes a pre-installation platform (121), two support frames (122) spaced apart on the pre-installation platform (121), and a cross tie rod (123) respectively connected to the two support frames (122).

9. The pre-assembly device for a high-power turboprop engine according to claim 8, wherein, The height adjustment structure (300) includes a mounting plate (380) disposed on the support frame (122), an ear (370) detachably connected to the bottom of the mounting frame (200), a plurality of first fixing holes vertically formed on the mounting plate (380), a second fixing hole formed on the ear (370) for corresponding arrangement with the first fixing holes, and a fixing bolt that is sequentially inserted into the second fixing hole and the first fixing hole after height adjustment.

10. A test run method for a high-power turboprop engine, characterized in that, Using the high-power turboprop engine pre-installation device according to any one of claims 1-9, the following steps are included: S1. In the preparation room, select and set the vertical height according to the specifications of the propeller in the current high-power turboprop engine to be tested, and install the mounting frame (200) on the height adjustment structure (300) of the pre-installation frame (100) based on the set vertical height. S2. Install the engine body on the mounting frame (200), and then install the propeller and the test structure on the engine body respectively. S3. After the hoisting equipment hoists and connects the mounting frame (200), separate the mounting frame (200) from the height adjustment structure (300), and then hoist and transfer the mounting frame (200) to the test room to conduct the test run of the current high-power turboprop engine to be tested. At the same time, in the preparation room, pre-install the next high-power turboprop engine to be tested.

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