High-power turboprop engine pre-installation device and test method

Abstract

The present invention discloses a high-power turboprop engine preassembly device and a test method, which are used for the preassembly of a high-power turboprop engine. The high-power turboprop engine includes an engine body, a propeller and a test structure. The preassembly device includes a preassembly frame for support, a height-adjusting structure arranged on the preassembly frame and a mounting frame for detachably connecting to the height-adjusting structure. The preassembly frame is used to be installed in a test stand for preassembly of the mounting frame and the high-power turboprop engine. The height-adjusting structure is used to adjust the vertical height of the mounting frame during preassembly of the mounting frame to prevent interference in the vertical plane when the propeller is installed. The mounting frame is used to cantilever-mount the engine body and install the propeller and the test structure on the engine body after being connected to the height-adjusting structure, and then hoist the mounting frame into the test room after being separated from the height-adjusting structure. The preassembly requirements of the high-power turboprop engine are met, rapid replacement and preassembly of the high-power turboprop engine are realized, and the utilization rate of the test bench is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of turboprop engine test equipment, and in particular to a high-power turboprop engine pre-assembly device and a test method using the high-power turboprop engine pre-assembly device. Background Art

[0002] As the core component of an aircraft, the performance of an aircraft engine directly determines the overall performance of the aircraft. In order to test the performance of an aircraft engine, an aircraft engine test bench is usually used as an important facility platform in the design, development and production process of the aircraft engine to adapt to the test and verification work during the development process of various types of aircraft engines.

[0003] High-power turboprop engines, commonly used in large aircraft, have high intake airflow rates, typically reaching 1800 kg / s. To ensure the required and stable intake airflow field during testing, a cantilevered installation method is commonly used. This involves the mounting frame, engine body, and propeller being individually hoisted onto and off the test bench in the test chamber. The specific process involves assembling the mounting frame onto a dynamic frame, then hoisting the engine body into the air for mid-air assembly. Finally, the propeller is hoisted onto the engine body. This assembly method requires a simple crane system and low cost, but operators spend a lot of time working at altitude, leading to low test bench efficiency when the test workload is heavy. This is because the engine body's complex exterior structure and diverse testing requirements make assembly between the engine body and the mounting frame difficult, requiring multiple hoists to complete installation. This aerial hoisting requires high-precision lifting techniques, making installation challenging. Furthermore, due to testing requirements, numerous measurement points and piping must be arranged on the engine body. If all of this work were completed at altitude, personnel would spend a long time working at altitude, and the numerous auxiliary tools required would require frequent trips up and down the platform, posing a significant safety risk.

[0004] For example, Chinese invention patent application CN115389206A discloses an aircraft engine pre-assembly device and pre-assembly method, which includes a frame, a mounting mechanism, a detachable mounting seat, a mounting structure compatible with a test bench, an adjustment component, and a centering mechanism. While one group of personnel is conducting the test process, another group of personnel is pre-assembling on the pre-assembly device. After the test is completed, the device is pushed to the test bench.

[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 turboshaft or turbojet engines through pre-installation, while high-power turboprop engines do not require centering. Moreover, if the pre-installation device is used to install a high-power turboprop engine, the overall installation structure will be unstable due to the limitation of the propeller diameter, and there may be a risk of head-diving. Therefore, it cannot meet the pre-installation requirements of high-power turboprop engines and is not suitable for high-power turboprop engines. Summary of the Invention

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

[0007] According to one aspect of the present invention, a high-power turboprop engine preassembly device is provided for preassembly of a high-power turboprop engine, the high-power turboprop engine comprising an engine body, a propeller and a test structure, the preassembly device comprising a preassembly frame for support, a height-adjusting structure arranged on the preassembly frame and a mounting frame for detachably connecting to the height-adjusting structure, the preassembly frame being used to be installed in a test stand for preassembly of the mounting frame and the high-power turboprop engine, the height-adjusting structure being used to adjust the vertical height of the mounting frame during preassembly of the mounting frame to prevent interference in the vertical plane during installation of the propeller, the mounting frame being used to cantilever-mount the engine body and install the propeller and the test structure on the engine body after being connected to the height-adjusting structure, and then hoisted into the test room after being separated from the height-adjusting structure.

[0008] As a further improvement of the above technical solution:

[0009] Furthermore, the pre-installed frame includes two first frames arranged vertically and spaced apart, a second frame arranged horizontally on top of the two first frames, a third frame arranged obliquely and connected to the two first frames, first reinforcing ribs arranged horizontally and respectively connected to the first frame and the second frame, second reinforcing ribs arranged obliquely and respectively connected to the first frame and the second frame, and third reinforcing ribs arranged obliquely and respectively connected to the second frame and the third frame.

[0010] Furthermore, the height adjustment structure includes a rail system arranged on the first frame for vertically plugging and cooperating with the horizontal end of the mounting frame, a connecting plate arranged vertically slidably on the rail system for supporting the mounting frame from the bottom to drive the mounting frame to move vertically, and a height adjustment drive member arranged on the second frame and connected to the connecting plate at its movable end for driving the connecting plate to slide vertically. The rail system and the first frame are arranged in a one-to-one correspondence.

[0011] Furthermore, the rail system includes a rail frame arranged on the first frame for vertically plugging and mating with the horizontal end of the mounting frame, two sliding rails arranged on both outer sides of the rail frame, and a sliding member slidably mounted on the outside of the two sliding rails and connected to the connecting plate.

[0012] Furthermore, a rolling bearing 1, a connecting rod and two rolling bearings 2 are arranged in the track frame. The connecting rod is connected to the rolling bearing 1 and the inner wall of the track frame respectively. The two rolling bearings 2 are connected to the two inner walls of the rolling frame arranged opposite to each other respectively. The rolling bearing 1 and the two rolling bearings 2 are arranged in a herringbone shape in the horizontal plane and are all used for rolling cooperation with the end of the mounting frame in the horizontal direction.

[0013] Furthermore, the sliding part includes a sliding shell that is sleeved outside the two sliding rails and connected to the connecting plate, a rolling bearing three that is arranged in the sliding shell and rolls with the sliding rails, and a connecting rod two that is respectively connected to the rolling bearing three and the sliding shell. The sliding rails, the rolling bearing three and the connecting rod two are arranged in a one-to-one correspondence.

[0014] Furthermore, a plurality of positioning holes arranged at intervals are vertically provided on the track frame, the sliding shell is provided with mounting holes arranged corresponding to the positioning holes, and the height adjustment structure also includes positioning pins for sequentially inserting into the mounting holes and the positioning holes after height adjustment.

[0015] Furthermore, the pre-installation frame includes a pre-installation platform, two support frames spaced apart on the pre-installation platform, and a cross-tie rod respectively connected to the two support frames.

[0016] Furthermore, the height adjustment structure includes a mounting plate arranged on the support frame, a support ear detachably connected to the bottom of the mounting frame, a plurality of fixing holes 1 vertically opened on the mounting plate, a fixing hole 2 opened on the support ear for corresponding to the fixing hole 1, and a fixing bolt for sequentially inserting into the fixing hole 2 and the fixing hole 1 after height adjustment.

[0017] According to another aspect of the present invention, a high-power turboprop engine test method is also provided, which adopts the above-mentioned high-power turboprop engine preinstallation device, and includes the following steps: S1, in the standby test room, the vertical height is set according to the specifications of the propeller in the current high-power turboprop engine to be tested, so that the mounting frame is installed on the height adjustment structure of the preinstallation frame based on the set vertical height; S2, the engine body is installed on the mounting frame, and the propeller and the test structure are respectively installed on the engine body: S3, after the mounting frame is hoisted by the lifting equipment, the mounting frame is separated from the height adjustment structure, and the mounting frame is hoisted and transferred to the test room to test the current high-power turboprop engine to be tested. At the same time, in the standby test room, the next high-power turboprop engine to be tested is preinstalled.

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

[0019] The high-power turboprop engine preassembly device of the present invention installs a preassembly frame in a test stand and arranges a height-adjusting structure on the preassembly frame to connect the mounting frame through the height-adjusting structure. The engine body can be installed on the mounting frame in advance in a cantilever manner, and then the propeller and the test structure can be installed on the engine body, so that the interference problem in the installation process of the high-power turboprop engine can be checked and solved in advance, that is, part of the modification workload is transferred from the test room to the test stand, which improves the modification efficiency, reduces the time occupied by the test room, and realizes the preassembly of the high-power turboprop engine; during preassembly, the vertical height of the mounting frame is adjusted by the height-adjusting structure to prevent interference in the vertical plane when the propeller is installed, so as to meet the preassembly requirements of propellers of different specifications: after the preassembly is completed, the mounting frame is separated from the height-adjusting structure, and then the mounting frame is lifted and placed by the lifting equipment. The mounting frame is hoisted onto the test bench in the test room for test verification. Since the mounting frame adopts a cantilever type to install the engine body, the stability of the inlet airflow field during the test is guaranteed, which meets the pre-installation requirements of the high-power turboprop engine. At the same time, another high-power turboprop engine can be pre-installed in the standby test room. This solution effectively reduces the time that the high-power turboprop engine occupies the bench in a non-test state by separating the test and the boarding and disembarking of the high-power turboprop engine, thereby improving the utilization rate and versatility of the test bench. At the same time, it reduces the operating time and high-altitude working time of the operators during the boarding and disembarking process, and reduces safety risks and labor intensity. Compared with the existing technology, this solution meets the pre-installation requirements of the high-power turboprop engine, realizes the rapid replacement and pre-installation of the high-power turboprop engine, improves the utilization rate of the test bench, has strong practicality, and is suitable for wide promotion and application.

[0020] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 1 2 is a schematic diagram of the three-dimensional structure of the high-power turboprop engine preassembly device during preassembly according to the first preferred embodiment of the present invention;

[0023] Figure 2 yes Figure 1 The schematic structural diagram of the high-power turboprop engine pre-installation device from the first perspective is shown;

[0024] Figure 3 yes Figure 1 A schematic structural diagram of a high-power turboprop engine pre-installation device from a second perspective is shown;

[0025] Figure 4yes Figure 1 A schematic diagram of a portion of the structure of a high-power turboprop engine pre-installation device is shown;

[0026] Figure 5 yes Figure 4 An enlarged view of the partial structure of the high-power turboprop engine pre-installation device shown;

[0027] Figure 6 2 is a schematic diagram of the three-dimensional structure of the high-power turboprop engine preassembly device during preassembly according to the second preferred embodiment of the present invention;

[0028] Figure 7 This is an enlarged view of the local structure of the high-power turboprop engine preassembly device during preassembly of the preferred embodiment 2 of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the high-power turboprop engine preassembly device during preassembly according to the preferred embodiment 3 of the present invention.

[0030] Legend:

[0031] 100. Pre-installed frame; 111. First frame; 112. Second frame; 113. Third frame; 114. First reinforcing rib; 115. Second reinforcing rib; 116. Third reinforcing rib; 117. Counterweight; 121. Pre-installed platform; 122. Support frame; 123. Transverse tie rod; 124. Oblique support; 125. Reinforcing rib; 200. Mounting frame; 300. Height adjustment structure; 310. Track system; 311. Track frame; 312. Sliding track; 313. Rolling bearing 1; 314. Connecting rod 1; 315. Rolling bearing 2; 316. Sliding housing; 317. Rolling bearing 3; 318. Connecting rod 2; 320. Connecting plate; 330. Motor; 340. Wheel mechanism; 350. Height adjustment rope; 360. Positioning pin; 370. Support lug; 380. Mounting plate; 400. Moving escalator. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0033] The terms "first," "second," and the like in the specification, claims, and accompanying drawings of this application are used to distinguish between different objects, not to describe a particular order. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements, but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0034] Example 1:

[0035] like Figure 1-Figure 3 As shown, the high-power turboprop engine preassembly device of this embodiment is used for preassembly of a high-power turboprop engine. The high-power turboprop engine includes an engine body, a propeller and a test structure. The preassembly device includes a preassembly frame 100 for support, a height adjustment structure 300 arranged on the preassembly frame 100, and a mounting frame 200 for detachably connecting to the height adjustment structure 300. The preassembly frame 100 is used to be installed in a test stand for preassembly of 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 when preassembling the mounting frame 200 to prevent interference in the vertical plane when installing the propeller. The mounting frame 200 is used to cantilever-mount 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 hoisted into the test room after being separated from the height adjustment structure 300.

[0036] like Figure 1-Figure 3 As shown, specifically, the high-power turboprop engine preassembly device of the present invention installs the preassembly frame 100 in the test stand and arranges the height-adjusting structure 300 on the preassembly frame 100, so as to connect the mounting frame 200 through the height-adjusting structure 300. The engine body can be installed on the mounting frame 200 in advance in a cantilever manner, and then the propeller and the test structure can be installed on the engine body, so that the interference problem in the installation process of the high-power turboprop engine can be checked and solved in advance, that is, part of the modification workload is transferred from the test room to the test stand, which improves the modification efficiency, reduces the test room occupancy time, and realizes the preassembly of the high-power turboprop engine; during preassembly, the vertical height of the mounting frame 200 is adjusted by the height-adjusting structure 300 to prevent interference in the vertical plane when the propeller is installed, so as to meet the preassembly requirements of propellers of different specifications: after the preassembly is completed, the mounting frame 200 is adjusted to the height-adjusting structure 300. The mounting frame 200 is separated from the test bench 300, and then the mounting frame 200 is hoisted to the test bench in the test room by the lifting equipment for test verification. Since the mounting frame 200 adopts the cantilever type to install the engine body, the stability of the inlet air flow field during the test is guaranteed, and the pre-installation requirements of the high-power turboprop engine are met. At the same time, another high-power turboprop engine can be pre-installed in the standby test room. This solution effectively reduces the time that the high-power turboprop engine occupies the bench in a non-test state by separating the test and the on-and-off stage of the high-power turboprop engine, thereby improving the utilization rate and versatility of the test bench. At the same time, it reduces the operating time and high-altitude working time of the operators in the process of getting on and off the bench, and reduces safety risks and labor intensity. Compared with the existing technology, this solution meets the pre-installation requirements of the high-power turboprop engine, realizes the rapid replacement and pre-installation of the high-power turboprop engine, improves the utilization rate of the test bench, has strong practicality, and is suitable for wide promotion and application.

[0037] It should be understood that the test structure is used to meet the test requirements, and the measuring points and pipelines installed on the engine body can be installed in advance in the test stand, thereby greatly reducing the occupancy time of the test bench.

[0038] like Figure 4 As shown, in this embodiment, the pre-installed frame 100 includes two first frames 111 arranged vertically and spaced apart, a second frame 112 arranged horizontally on top of the two first frames 111, a third frame 113 arranged obliquely and connected to the two first frames 111, first reinforcing ribs 114 arranged horizontally and connected to the first frames 111 and the second frames 112 respectively, second reinforcing ribs 115 arranged obliquely and connected to the first frames 111 and the second frames 112 respectively, and third reinforcing ribs 116 arranged obliquely and connected to the second frames 112 and the third frames 113 respectively. Specifically, two first frames 111, a second frame 112 and a third frame 113 are formed into a main body for support, and then a first reinforcing rib 114 is welded between the first frame 111 and the second frame 112, a second reinforcing rib 115 is welded between the first frame 111 and the second frame 112, and a third reinforcing rib 116 is welded between the second frame 112 and the third frame 113 to form multiple triangular structures to ensure the stability of the overall structure of the pre-installation frame 100, thereby achieving stable pre-installation of high-power turboprop engines.

[0039] like Figure 4 and Figure 5As shown, in this embodiment, the height adjustment structure 300 includes a rail system 310 arranged on the first frame 111 for vertically plugging and cooperating with the horizontal end of the mounting frame 200, a connecting plate 320 arranged vertically slidably on the rail system 310 for supporting the mounting frame 200 from the bottom to drive the mounting frame 200 to move vertically, and a height adjustment drive member arranged on the second frame 112 and connected to the connecting plate 320 at its movable end for driving the connecting plate 320 to slide vertically. The rail system 310 and the first frame 111 are arranged in a one-to-one correspondence. Specifically, after the horizontal end of the mounting frame 200 is plugged into the rail system 310 in the vertical direction, the bottom of the horizontal end of the mounting frame 200 abuts against the connecting plate 320, so that the connecting plate 320 can be driven to slide vertically by adjusting the height of the driving member, thereby adjusting the vertical movement of the mounting frame 200, thereby adjusting the vertical height of the mounting frame 200, and preventing interference in the vertical plane during propeller installation, so as to meet the pre-installation requirements of propellers of different specifications; the rail system 310 and the first skeleton 111 are arranged in a one-to-one correspondence, that is, two rail systems 310 are arranged at intervals and plugged into the mounting frame 200 at the same time, so as to limit the horizontal direction of the mounting frame 200; and because the height adjustment structure 300 is only connected to the horizontal end of the mounting frame 200, the mounting frame 200 is 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 body, propeller and test structure, and improves the pre-installation efficiency.

[0040] like Figure 4 and Figure 5 As shown, in this embodiment, the height adjustment drive component includes a motor 330, a wheel mechanism 340, and a height adjustment rope 350 that is sleeved outside the wheel mechanism 340 and connected to the motor 330 and the connecting plate 320 respectively. When the motor 330 works, the wheel mechanism 340 changes the movement direction of the height adjustment rope 350, thereby driving the connecting plate 320 to slide vertically following the height adjustment rope 350, thereby adjusting the vertical height of the mounting frame 200.

[0041] like Figure 4 As 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-installation rack 100 and the installation rack 200.

[0042] like Figure 4 and Figure 5As shown, in this embodiment, the track system 310 includes a track frame 311 disposed on the first frame 111 for vertically plugging with the horizontal end of the mounting frame 200, two sliding rails 312 disposed on either side of the track frame 311, and a sliding member slidably mounted on the outside of the two sliding rails 312 and connected to the connecting plate 320. Specifically, the track frame 311 is vertically plugged with the horizontal end of the mounting frame 200, and the sliding member is securely mounted on the two sliding rails 312. The sliding member slides relative to the sliding rails 312, allowing the connecting plate 320 to move vertically to adjust the vertical height of the mounting frame 200.

[0043] like Figure 4 and Figure 5 As shown, in this embodiment, a rolling bearing 1 313, a connecting rod 1 314, and two rolling bearing 2 315 are arranged within the track frame 311. The connecting rod 1 314 is connected to the rolling bearing 1 313 and the inner wall of the track frame 311, respectively. The two rolling bearing 2 315 are connected to two inner walls of the rolling frame arranged opposite each other. The rolling bearing 1 313 and the two rolling bearing 2 315 are arranged in a herringbone shape in the horizontal plane and are both configured to engage in rolling engagement with the horizontal ends of the mounting frame 200. Specifically, the positioning of the mounting frame 200 is achieved by the herringbone shape arrangement of the rolling bearing 1 313 and the two rolling bearing 2 315 in the horizontal plane. When the mounting frame 200 moves vertically, the rolling engagement reduces frictional resistance, facilitates smooth vertical movement of the mounting frame 200, and avoids interference and jamming.

[0044] like Figure 4 and Figure 5 As shown, in this embodiment, the sliding member includes a sliding housing 316 that is sleeved outside the two sliding rails 312 and connected to the connecting plate 320, a third rolling bearing 317 disposed within the sliding housing 316 and in rolling engagement with the sliding rails 312, and a second connecting rod 318 connected to the third rolling bearing 317 and the sliding housing 316, respectively. The sliding rails 312, the third rolling bearing 317, and the second connecting rod 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 third rolling bearing 317 converts linear friction into rolling friction, significantly reducing frictional resistance and facilitating smooth vertical movement of the connecting plate 320, avoiding obstructions.

[0045] In this embodiment, the track frame 311 is provided with a plurality of vertically spaced positioning holes. The sliding housing 316 is provided with mounting holes corresponding to the positioning holes. The height adjustment structure 300 also includes positioning pins 360, which are sequentially inserted into the mounting and positioning holes after height adjustment. Specifically, once the mounting frame 200 is adjusted to the desired vertical height, the positioning pins 360 are sequentially inserted into the mounting and positioning holes to secure the sliding member, preventing vertical movement of the mounting frame 200 during pre-assembly and ensuring the stability of the overall structure.

[0046] 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 pull rod assembly 1 connected to the U-shaped plate 1 and the U-shaped plate 2 respectively, and a pull rod assembly 2 connected to the U-shaped plate 2 and the adapter plate respectively. The U-shaped plate 1 and the U-shaped plate 2 enclose a storage space for installing the engine body, and the adapter plate is plugged into and matched with the rail system 310.

[0047] Example 2:

[0048] like Figure 6 As shown, this embodiment differs from the first embodiment in that the pre-assembly frame 100 includes a pre-assembly platform 121, two support frames 122 spaced apart on the pre-assembly platform 121, and tie rods 123 connected to the two support frames 122. Specifically, the pre-assembly frame 100 is entirely constructed of I-beams, ensuring structural strength. The two support frames are spaced apart on the pre-assembly platform 121 using expansion bolts, and are then connected by tie rods 123 to form a single structure. The engine body is mounted between the two support frames.

[0049] 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.

[0050] like Figure 7As shown, in this embodiment, the height adjustment structure 300 includes a mounting plate 380 arranged on the support frame 122, a support ear 370 detachably connected to the bottom of the mounting frame 200, a plurality of fixing holes 1 vertically opened on the mounting plate 380, a fixing hole 2 opened on the support ear 370 for corresponding to the fixing hole 1, and a fixing bolt for sequentially inserting into the fixing hole 2 and the fixing hole 1 after height adjustment. Specifically, the height adjustment structure 300 includes four ears 370, and the four legs of the U-shaped plate 1 and the U-shaped plate 2 of the mounting frame 200 are respectively placed on the four ears 370. Connection holes are drilled on the ears 370, the U-shaped plate 1 and the U-shaped plate 2. After the U-shaped plate 1 and the U-shaped plate 2 are placed in the appropriate position, they are connected and fixed with a plug pin; in order to prevent the propeller from interfering in the vertical plane during installation, the fixing hole 2 on the ear 370 corresponds to the fixing hole 1 at a different height on the mounting plate 380, and the ear 370 can be fixed at a suitable vertical height by tightening it with a fixing bolt, thereby fixing the mounting frame 200 and the propeller at a suitable vertical height.

[0051] like Figure 7 As shown, in this embodiment, the ears 370 are arranged in a triangular shape to ensure structural stability.

[0052] Example 3:

[0053] like Figure 8 As shown, the difference between this embodiment and the second embodiment is that the pre-installation device further includes a movable escalator 400 arranged in the test room, so that the operator can easily pre-install the high-power turboprop engine through the movable escalator 400.

[0054] The high-power turboprop engine test method of this embodiment adopts the above-mentioned high-power turboprop engine preassembly device, and includes the following steps: S1, in the standby test room, the vertical height is set according to the specifications of the propeller in the current high-power turboprop engine to be tested, so as to install the mounting frame 200 on the height adjustment structure 300 of the preassembly frame 100 based on the set vertical height; S2, the engine body is installed on the mounting frame 200, and the propeller and the test structure are respectively installed on the engine body; S3, after the mounting frame 200 is hoisted by the lifting equipment, the mounting frame 200 is separated from the height adjustment structure 300, and the mounting frame 200 is hoisted and transferred to the test room to test the current high-power turboprop engine to be tested. At the same time, the preassembly of the next high-power turboprop engine to be tested is carried out in the standby test room. Specifically, by adopting the test method of this embodiment, the next high-power turboprop engine can be pre-installed on the test piece while the previous high-power turboprop engine is being tested. After the test of the previous high-power turboprop engine is completed, the next high-power turboprop engine can be quickly assembled, and the pre-installation requirements of the high-power turboprop engine are met during pre-installation, so as to effectively reduce the time that the high-power turboprop engine occupies the test bench in the non-test state, thereby improving the utilization rate and versatility of the test bench; at the same time, it reduces the operating time and high-altitude working time of the operators in the process of getting on and off the platform, thereby reducing safety risks and labor intensity.

[0055] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

[0056] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0057] This article uses specific examples to illustrate the principles and implementation methods of this application. The above examples are only used to help understand the method and core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of this application, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of this application to other occasions without improvement, should be regarded as the protection of this application.

Claims

1. A high-power turboprop engine pre-assembly device, used for pre-assembly of a high-power turboprop engine, wherein the high-power turboprop engine comprises an engine body, a propeller and a test structure, and is characterized in that: The pre-installation device comprises a pre-installation frame (100) for supporting, a height adjustment structure (300) arranged on the pre-installation frame (100), and a mounting frame (200) for detachably connecting with the height adjustment structure (300); the pre-installation frame (100) is used to be installed in a test room so as to pre-install the mounting frame (200) and a high-power turboprop engine; the height adjustment structure (300) is used to adjust the vertical height of the mounting frame (200) when the mounting frame (200) is pre-installed so as to prevent interference in a vertical plane when the propeller is installed; the mounting frame (200) is used to cantilever-mount 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, after being separated from the height adjustment structure (300), can be hoisted into the test room; The pre-installed frame (100) includes two first frames (111) arranged vertically and spaced apart, a second frame (112) arranged horizontally on top of the two first frames (111), a third frame (113) arranged obliquely and connected to the two first frames (111), a first reinforcing rib (114) arranged horizontally and connected to the first frames (111) and the second frames (112), a second reinforcing rib (115) arranged obliquely and connected to the first frames (111) and the second frames (112), and a third reinforcing rib (116) arranged obliquely and connected to the second frames (112) and the third frames (113). The height adjustment structure (300) includes a rail system (310) arranged on the first frame (111) for plugging and matching with the horizontal end of the mounting frame (200) in the vertical direction, a connecting plate (320) arranged on the rail system (310) in a vertically slidable manner 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 frame (112) and connected to the connecting plate (320) at a movable end for driving the connecting plate (320) to slide vertically. The rail system (310) and the first frame (111) are arranged in a one-to-one correspondence.

2. The high-power turboprop engine pre-assembly device according to claim 1, characterized in that: The track system (310) comprises a track frame (311) arranged on the first frame (111) for plugging and matching with the end of the mounting frame (200) in the horizontal direction in the vertical direction, two sliding rails (312) arranged on the two outer sides of the track frame (311), and a sliding member slidably sleeved on the outside of the two sliding rails (312) and connected to the connecting plate (320).

3. The high-power turboprop engine pre-assembly device according to claim 2, characterized in that: A rolling bearing (313), a connecting rod (314) and two rolling bearings (315) are arranged in the track frame (311). The connecting rod (314) is connected to the rolling bearing (313) and the inner wall of the track frame (311) respectively. The two rolling bearings (315) are connected to two inner walls of the rolling frame arranged opposite to each other. The rolling bearing (313) and the two rolling bearings (315) are arranged in a herringbone shape in a horizontal plane and are used for rolling cooperation with the end of the mounting frame (200) in the horizontal direction.

4. The high-power turboprop engine pre-assembly device according to claim 2, characterized in that: The sliding member includes a sliding housing (316) which is sleeved outside the two sliding rails (312) and connected to the connecting plate (320), a third rolling bearing (317) which is arranged in the sliding housing (316) and rolls with the sliding rails (312), and a second connecting rod (318) which is respectively connected to the third rolling bearing (317) and the sliding housing (316). The sliding rails (312), the third rolling bearing (317) and the second connecting rod (318) are arranged in a one-to-one correspondence.

5. The high-power turboprop engine pre-assembly device according to claim 4, characterized in that: The track frame (311) is provided with a plurality of positioning holes arranged at intervals in the vertical direction, the sliding housing (316) is provided with mounting holes arranged corresponding to the positioning holes, and the height adjustment structure (300) further comprises a positioning pin (360) for sequentially inserting into the mounting hole and the positioning hole after height adjustment.

6. A high-power turboprop engine test method, characterized in that: The high-power turboprop engine preassembly device according to any one of claims 1 to 5 comprises the following steps: S1, in a test preparation room, selecting and setting a vertical height according to the specifications of a propeller in a high-power turboprop engine to be tested, and installing a mounting frame (200) on a height adjustment structure (300) of a pre-installed frame (100) based on the set vertical height; S2, installing the engine body onto the mounting frame (200), and then installing the propeller and the test structure onto the engine body respectively: S3, after the hoisting equipment has hoisted the mounting frame (200), the mounting frame (200) is separated from the height adjustment structure (300), and the mounting frame (200) is hoisted and transferred to the test room to conduct a test run of the current high-power turboprop engine to be tested. At the same time, the next high-power turboprop engine to be tested is pre-installed in the standby test room.

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