Multi-machine parallel turnover hoisting system and method suitable for high-thrust engine test

Abstract

The invention discloses a multi-machine parallel turnover hoisting system and method suitable for a high-thrust engine test, and solves the problems that a high-thrust engine turnover hoisting system is difficult to adapt to a high-density test, low in conversion efficiency and low in station utilization rate, and the multi-machine parallel turnover hoisting system specifically comprises a station I, a station II and a plurality of omni-directional moving vehicles which are arranged in parallel; a first preparation room is arranged in the station I, and a first crane is arranged at the top; an overturning lifting appliance is arranged in the first preparation room; in the station I, a first rail is arranged on one side of the first preparation room; a first flat plate transport vehicle is arranged on the first track; a first test run rack is arranged in the middle of one end of the first track; a second preparation room is arranged in the station II, a second crane is arranged at the top of the station II, and a second rail is arranged in the station II and on one side of the second preparation room; a second flat plate transport vehicle is arranged on the second track; a second test run rack is arranged in the middle of one end of the second track; and a coordination channel and an engine preparation station are arranged between the station I and the station II.

Description

TECHNICAL FIELD

[0001] The present application relates to a turnover hoisting system and method, in particular to a multi-engine parallel turnover hoisting system and method suitable for large-thrust engine test. BACKGROUND

[0002] With the rapid development of civil aerospace industry, the research and application of new generation of civil large-thrust engine has become the mainstream trend, and its own quality has increased significantly, which puts forward higher requirements for the core performance of the turnover hoisting system such as carrying capacity and stability. At the same time, the recoverable rocket has been clearly defined as the core development direction of subsequent civil rockets, and the single-engine and multi-engine parallel test scene based on this technology further improves the precision control, synchronous cooperation and other technical index requirements of the turnover hoisting system.

[0003] In addition, the number of civil engines continues to grow, which requires the turnover hoisting system to have sufficient flexibility to adapt to the rapid turnover hoisting needs of different specifications of engines and adapt to high-density test scenarios. However, the existing turnover hoisting system has the following significant technical defects: first, it is difficult to adapt to the high-efficiency operation needs of high-density tests, and the operation efficiency is low; second, it cannot be quickly converted between reliability tests (long time-consuming) and multi-engine parallel tests (complex working conditions), resulting in poor connection of test procedures; third, although some schemes separate the two tests in different stations, resulting in low station utilization rate, waste of equipment resources, poor overall adaptability of the system, and inability to meet the development needs of the civil aerospace industry in scale and efficiency. Therefore, it is an urgent technical problem to develop a turnover hoisting system with strong adaptability, efficient conversion and high utilization rate. SUMMARY

[0004] In order to solve the technical problems of the existing large-thrust engine turnover hoisting system that is difficult to adapt to high-density tests, has low conversion efficiency and low station utilization rate, the present application provides a multi-engine parallel turnover hoisting system and method suitable for large-thrust engine test.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions: A multi-engine parallel turnover hoisting system suitable for large-thrust engine test, characterized in that: It comprises an I station, a II station and a plurality of omnidirectional mobile vehicles arranged side by side; The I station is provided with a first preparation room at the top of which a first crane is arranged; a turnover hoist is arranged in the first preparation room for overturning the engine to be hoisted; A first track is arranged on one side of the first preparation room in the I station; a first flatbed transport vehicle is arranged on the first track; a first test bed is arranged at the middle of one end of the first track; the first test bed is used to dock the engine to be hoisted for subsequent work; The second preparation room is provided on the top of the II station, and a second rail is provided on one side of the second preparation room in the II station; a second flat plate transport vehicle is arranged on the second rail; and a second test frame is arranged at the middle of one end of the second rail. The first preparation room and the second preparation room are both provided with a hoisting position for the engine to be hoisted. The second rail and the first rail are perpendicular to each other. The I station and the II station are provided with a coordination channel and an engine preparation station.

[0006] Further, the turnover hoist comprises a turnover support, a main shaft driving mechanism arranged in the middle of the turnover support, a turnover hoist arm arranged horizontally on the turnover support, a turnover shaft arranged horizontally below the turnover hoist arm and connected with the action end of the main shaft driving mechanism, two width adjusting mechanisms arranged at two ends of the turnover hoist arm respectively, two chains and two clamping mechanisms. The main shaft driving mechanism is used for driving the turnover shaft to rotate. A flat cutting surface is arranged on the turnover shaft, and two driving gears are sleeved on the flat cutting surface; the driving gears are gap-fitted with the turnover shaft. The two chains are meshed with the two driving gears respectively. The two width adjusting mechanisms are used for adjusting the positions of the two chains and the two driving gears on the turnover shaft, so as to adjust the width between the two chains. The two clamping mechanisms are arranged on the two chains respectively and are used for clamping the engine to be hoisted.

[0007] Further, the width adjusting mechanism comprises a driving motor fixedly connected with the turnover hoist arm, a lead screw arranged on the rotating shaft of the driving motor, a sliding rail arranged on the turnover hoist arm, a sliding block arranged on the sliding rail and threadedly connected with the lead screw, and two limiting plate assemblies fixedly connected with the sliding block and sleeved on the turnover shaft. The two limiting plate assemblies are respectively located at the two axial ends of the driving gear and are gap-fitted with the turnover shaft.

[0008] Further, the first flat plate transport vehicle and the second flat plate transport vehicle are the same in structure. The first flat plate transport vehicle comprises a hollow frame matched with the outer shape of the first test frame, a first roller arranged at the bottom of the hollow frame, a flat plate arranged horizontally at the top of the hollow frame, a hinge arranged at two sides of the flat plate, and a second roller rotatably connected with the hinge. The first roller is matched with the first rail. A U-shaped gap is arranged on the flat plate, and the opening of the U-shaped gap faces the first test frame; two opposite doors capable of completely covering the U-shaped gap are arranged in the U-shaped gap. The two opposite doors are respectively hinged with the two parallel walls of the U-shaped gap of the flat plate. The hinged piece is used for timely folding up the second roller, so that the flat plate falls on the hollow frame, thereby making the hollow frame and the flat plate into a whole; or is used for timely unfolding the second roller, so that the flat plate is erected, thereby separating from the hollow frame.

[0009] Further, a fence is arranged around the flat plate. The fence is provided with an entrance and exit corresponding to the opening of the U-shaped notch.

[0010] Further, an engine transport vehicle is further included for carrying the engine to be hoisted.

[0011] A turnover hoisting method suitable for large-thrust engine test, wherein the special feature is that the turnover hoisting system suitable for large-thrust engine test is used, and the method comprises the following steps: Step 1, moving a to-be-hoisted engine to a to-be-hoisted position in a first preparation room in the I station, hoisting a turnover hoist by a first crane in the I station, hoisting the to-be-hoisted engine by the turnover hoist and turning over, so that the nozzle of the to-be-hoisted engine is vertically downward; at the same time, another to-be-hoisted engine is transferred by a second preparation room, a second track, a second flat plate transport vehicle and a second test bed in the II station; Step 2, moving the to-be-hoisted engine to the omnidirectional mobile vehicle by the first crane in the I station, disassembling the turnover hoist, and moving the turnover hoist to the original position by the first crane; Step 3, moving the to-be-hoisted engine to the engine preparation station through the coordinated channel by the omnidirectional mobile vehicle, and performing preliminary preparation work on the to-be-hoisted engine; Step 4, after preparation, transporting the to-be-hoisted engine to the first flat plate transport vehicle by the omnidirectional mobile vehicle; transporting the to-be-hoisted engine to below the first test bed by the first flat plate transport vehicle, and completing the butt joint assembly work of the to-be-hoisted engine.

[0012] The beneficial effects of the present application are as follows: 1. The multi-engine parallel turnover hoisting system and method suitable for large-thrust engine test provided by the present application, the I station and the II station are connected in parallel through the coordinated channel, the to-be-hoisted engine is mainly hoisted on and off the station in the I station, and the work time is about 0.5 days, so that 2 to-be-hoisted engines can be hoisted on the station every day in the extreme case. The to-be-hoisted engines are transported to the engine preparation station for transfer by the omnidirectional mobile vehicles. In the case of further reducing the task cycle, the engines can be hoisted on and off the station in the I station and the II station synchronously, so that the work efficiency and flexibility are greatly improved.

[0013] 2, The multi-engine parallel overturning hoisting system and method suitable for large-thrust engine test provided by the application is provided with a width adjusting mechanism on the overturning hoist, which can adjust the width between the two chains, so as to adapt to different sizes of the engine to be hoisted.

[0014] 3, The multi-engine parallel overturning hoisting system and method suitable for large-thrust engine test provided by the application is provided with a hollow frame on the first flatbed truck and the second flatbed truck, the top of the hollow frame is provided with a flat plate, and a pair of opposite doors are arranged on the flat plate, so that when the first flatbed truck is transported to the first test bed, the bottom of the first test bed is not affected, and at the same time, when the first flatbed truck exits the first test bed, the pair of opposite doors are opened, so that the first flatbed truck can directly give way to other components, ensure that the upper flat plate is opened, and the operation is simple and convenient.

[0015] 4, The multi-engine parallel overturning hoisting system and method suitable for large-thrust engine test provided by the application is provided with a fence on the first flatbed truck, which can ensure the safety of the operator. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of the multi-engine parallel overturning hoisting system suitable for large-thrust engine test of the application; Figure 2 is a structural schematic view of the overturning hoist in the embodiment of the application; Figure 3 is a partial structural schematic view of the overturning hoist in the embodiment of the application; Figure 4 is a structural schematic view of the first flatbed truck in the embodiment of the application; Figure 5 is a structural schematic view of the hollow frame and the first roller in the embodiment of the application.

[0017] The reference signs are as follows: 1-first preparation room, 2-first crane, 3-all-directional mobile vehicle, 4-overturning lifting device, 41-overturning support, 42-main shaft driving mechanism, 43-overturning lifting arm, 44-overturning shaft, 45-width adjusting mechanism, 451-driving motor, 452-screw rod, 453-sliding rail, 454-sliding block, 455-limiting plate assembly, 46-chain, 47-clamping mechanism, 48-driving gear, 5-first rail, 6-first flat transport vehicle, 61-hollow frame, 62-first roller, 63-flat plate, 64-fence, 65-double door, 66-entrance and exit, 67-hinge, 68-second roller, 7-first test frame, 8-second preparation room, 9-second crane, 10-second rail, 11-second flat transport vehicle, 12-second test frame, 13-coordination channel, 14-engine preparation station, 15-engine transport vehicle. DETAILED DESCRIPTION

[0018] The technical solutions of the present application will be described clearly and completely below in combination with the drawings and embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application.

[0019] The multi-machine parallel overturning and lifting system provided by the embodiment of the present application is suitable for large-thrust engine test, as shown in Figure 1 The system comprises an I station, a II station, a plurality of all-directional mobile vehicles 3 and an engine transport vehicle 15 arranged side by side.

[0020] The first preparation room 1 is arranged in the I station, and the first crane 2 is arranged on the top of the I station; the overturning lifting device 4 is arranged in the first preparation room 1 and used for overturning the engine to be lifted; the first rail 5 is arranged in the I station and on one side of the first preparation room 1; the first flat transport vehicle 6 is arranged on the first rail 5; the first test frame 7 is arranged at the middle of one end of the first rail 5; and the first test frame 7 is used for connecting the engine to be lifted to facilitate subsequent work.

[0021] As shown in Figure 2As shown, the turnover spreader 4 includes a turnover bracket 41, a main shaft driving mechanism 42 arranged in the middle of the turnover bracket 41, a turnover boom 43 arranged horizontally on the turnover bracket 41, a turnover shaft 44 arranged horizontally below the turnover boom 43 and connected with the acting end of the main shaft driving mechanism 42, and two width adjusting mechanisms 45, two chains 46 and two clamping mechanisms 47 arranged respectively at both ends of the turnover boom 43; the main shaft driving mechanism 42 is used to drive the turnover shaft 44 to rotate; the turnover shaft 44 is provided with a flat cutting surface, and two driving gears 48 are sleeved on the flat cutting surface; the driving gears 48 are in clearance fit with the turnover shaft 44; the two chains 46 are in mesh with the two driving gears 48 respectively; the two width adjusting mechanisms 45 are used to adjust the positions of the two chains 46 and the two driving gears 48 on the turnover shaft 44, so as to adjust the width between the two chains 46; the two clamping mechanisms 47 are arranged on the two chains 46 respectively and are used to clamp the engine to be hoisted.

[0022] The turnover spreader 4 is also provided with an adjusting system and a driving motor 451 and the main shaft driving mechanism 42, so that it has intelligent sensing function, can monitor the size and weight information of the engine in real time, automatically adjusts the distance between the two chains according to these parameters, and ensures the stability and safety of the turnover hoisting process. During the engine lifting and lowering process, the adjusting system can accurately control the turnover speed and angle, avoid engine damage or personnel casualties caused by improper operation, and further ensure the safe operation of the hoisting operation.

[0023] In actual application, the intelligent sensing function of the adjusting system performs particularly well. Through high-precision sensors, various parameters of the engine can be quickly and accurately obtained, providing reliable basis for subsequent distance adjustment. In terms of turnover speed and angle control, the adjusting system adopts advanced control algorithm, which can dynamically adjust according to the actual situation of the engine, ensuring smooth and smooth turnover process. The fault self-diagnosis function greatly improves the reliability and safety of the system, reduces downtime and maintenance cost caused by faults, and provides strong protection for the hoisting operation of the engine.

[0024] As shown in Figure 3 The width adjusting mechanism 45 includes a driving motor 451 fixedly connected with the turnover boom 43, a lead screw 452 arranged on the rotating shaft of the driving motor 451, a sliding rail 453 arranged on the turnover boom 43, a sliding block 454 arranged on the sliding rail 453 and threadedly connected with the lead screw 452, and two limiting plate assemblies 455 fixedly connected with the sliding block 454 and sleeved on the turnover shaft 44. The two limiting plate assemblies 455 are respectively located at the axial two ends of the driving gear 48 and are in clearance fit with the turnover shaft 44.

[0025] As shown in Figure 4 and Figure 5 The first flatbed truck 6 is mainly made of Q235A material. The first flatbed truck 6 comprises a hollow frame 61 matched with the shape of the first test frame 7, a first roller 62 arranged at the bottom of the hollow frame 61, a flat plate 63 arranged in parallel at the top of the hollow frame 61, a hinge 67 arranged on both sides of the flat plate 63, and a second roller 68 rotatably connected with the hinge 67. The first roller 62 is matched with the first track 5. The flat plate 63 is provided with a U-shaped notch with an opening facing the first test frame 7. Two pairs of sliding doors 65 are arranged in the U-shaped notch and can completely cover the U-shaped notch. The two pairs of sliding doors 65 are respectively hinged to the two parallel walls of the U-shaped notch of the flat plate 63. The hinge 67 is used to timely fold up the second roller 68, so that the flat plate 63 falls on the hollow frame 61, thereby making the hollow frame 61 and the flat plate 63 an integral whole, or to timely unfold the second roller 68, so that the flat plate 63 is lifted up, thereby being separated from the hollow frame 61. A fence 64 is arranged around the flat plate 63 and is made of high-strength steel to ensure the stability and load-bearing capacity of the overall structure. An entrance 66 is arranged at the position corresponding to the opening of the U-shaped notch. The driving system selects an energy-efficient motor matched with a precise transmission device to ensure that the flatbed truck can run smoothly and quickly. The control system adopts advanced intelligent control technology, and the operator can easily realize the start, stop, steering and speed adjustment of the flatbed truck through the control panel.

[0026] The first flatbed truck 6 adopts a double-layer combined and separated structure. In the combined state, it can be used as a common flatbed truck. When there is equipment installed below that needs to pass through the flatbed truck and be connected with the engine, the sliding doors 65 can be turned to the two sides, the related equipment can pass through the hollow position of the hollow frame 61, the hollow frame 61 can meet the operation requirements after passing through, and can provide support structure for the equipment passing through. After all the work is completed, the flat plate 63 can be independently withdrawn from the use area.

[0027] The II station is provided with a second preparation room 8, the top of the II station is provided with a second crane 9, and the II station and one side of the second preparation room 8 are provided with a second track 10. The second track 10 is provided with a second flatbed truck 11, and the middle of one end of the second track 10 is provided with a second test frame 12.

[0028] The first preparation room 1 and the second preparation room 8 are both provided with a hoisting position for the engine to be hoisted.

[0029] The directions of the second track 10 and the first track 5 are perpendicular. The first flatbed truck 6 and the second flatbed truck 11 have the same structure.

[0030] A coordination channel 13 and an engine preparation station 14 are arranged between the first station I and the second station II. The coordination channel 13 can timely find the fault of the station through the coordination scheduling system, intelligently judge through the scheduling system, realize the bidirectional coordination scheduling of multiple stations and multiple transport vehicles, and well solve the resource balance and automatic configuration when the resources of the stations are unbalanced.

[0031] The engine transport vehicle 15 is used for carrying the engine to be hoisted.

[0032] The above-described multi-engine parallel overturning and hoisting system suitable for large-thrust engine test is used for overturning and hoisting, and specifically includes the following steps: Step 1: The engine to be hoisted is moved to the hoisting position in the first preparation room 1 of the first station I through the engine transport vehicle 15, the overturning hoist 4 is hoisted through the first crane 2 of the first station I, the engine to be hoisted is hoisted through the overturning hoist 4, and overturning is performed in the air to make the nozzle of the engine to be hoisted vertically downward, and the overturning is completed; at the same time, the other engine to be hoisted is transferred through the second preparation room 8, the second track 10, the second flat transport vehicle 11 and the second test bed 12 in the second station II.

[0033] Step 2: The engine to be hoisted is moved to the omnidirectional mobile vehicle 3 through the first crane 2 of the first station I, the overturning hoist 4 is disassembled, and the overturning hoist 4 is moved to the original position through the first crane 2.

[0034] Step 3: The engine to be hoisted is moved to the engine preparation station 14 through the omnidirectional mobile vehicle 3 through the coordination channel 13, and the engine to be hoisted is prepared (the interface short pipe between the test bed and the engine is installed, part of the pipeline of the auxiliary system is installed, the related channels and sensors of the measurement and control system are checked, etc.).

[0035] Step 4: After the preparation is completed, the engine to be hoisted is transported to the first flat transport vehicle 6 through the omnidirectional mobile vehicle 3; the engine to be hoisted is transported to the lower side of the first test bed 7 through the first flat transport vehicle 6, and the interface assembly of the engine to be hoisted is completed.

[0036] The process of descending the platform is the reverse process of ascending the platform, mainly including: relevant interface pipelines are removed, the omnidirectional mobile transfer lifting platform is tightly contacted with the engine, the engine is disassembled, the engine is transported to the engine acceptance and installation work platform to complete the relevant engine test work, and finally the engine is transported to the station rear room to complete the overturning and connection with the transport vehicle; and finally the engine is transported to leave the test station.

[0037] The embodiment is based on the existing reliability test of multi-state switching and high-efficiency rapid test, and directly carries out rapid switching, and a parallel process and overall layout suitable for multi-machine parallel test and single-machine high-density test are designed. The layout fully utilizes the equipment of two stations for mutual backup, a multi-site parallel test process based on the pipeline is designed, the process can simultaneously meet the parallel circulation of 3-5 engines on the test bench, and complete the preparation, test and time inspection. The device utilization rate is high, the parallel process is multiple, and the demand of high-density test can be met. When responding to different test demands, the system and method show excellent flexibility. Whether it is long-term continuous reliability test or high-efficiency rapid test, mode switching can be quickly and accurately carried out, and the smooth progress of the test process is ensured. At the same time, the high reliability design ensures that the system can stably run in various complex test environments, reduces the test interruption caused by faults, and greatly improves the overall test efficiency.

[0038] An adjustable overturning lifting structure which can quickly adapt to single machine and multiple machines is designed for the process. The overturning lifting tool has the advantages of original overturning convenience and reliable use. The main function is to adjust the distance in time, and through the set distance point, combined with the command dispatching system, the automatic coordination of various engines, single or multiple engines is realized, manual operation is reduced, and work efficiency is improved.

[0039] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any change or replacement within the technical scope disclosed in the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A multi-engine parallel overturning and hoisting system suitable for large-thrust engine test, characterized in that: comprising a first station, a second station and a plurality of omnidirectional mobile vehicles (3) arranged side by side; the first station is provided with a first preparation room (1) at the top of which a first crane (2) is arranged; the first preparation room (1) is provided with an overturning hoist (4) for overturning the engine to be hoisted; the first station is provided with a first track (5) on one side of the first preparation room (1); the first track (5) is provided with a first flatbed transport vehicle (6); one end of the first track (5) is provided with a first test bed (7) in the middle; the first test bed (7) is used to dock the engine to be hoisted for subsequent work; the second station is provided with a second preparation room (8) at the top of which a second crane (9) is arranged; the second station is provided with a second track (10) on one side of the second preparation room (8); the second track (10) is provided with a second flatbed transport vehicle (11); one end of the second track (10) is provided with a second test bed (12) in the middle; the first preparation room (1) and the second preparation room (8) are both provided with a hoisting position for the engine to be hoisted; the directions of the second track (10) and the first track (5) are perpendicular; the first station and the second station are provided with a coordination channel (13) and an engine preparation station (14).

2. The multi-engine parallel overturning and hoisting system suitable for large-thrust engine test according to claim 1, characterized in that: the overturning hoist (4) comprises an overturning support (41), a main shaft driving mechanism (42) arranged in the middle of the overturning support (41), an overturning hoist arm (43) arranged horizontally on the overturning support (41), an overturning shaft (44) arranged horizontally below the overturning hoist arm (43) and connected with the acting end of the main shaft driving mechanism (42), two width adjusting mechanisms (45) arranged respectively at both ends of the overturning hoist arm (43), two chains (46) and two clamping mechanisms (47); the main shaft driving mechanism (42) is used to drive the overturning shaft (44) to rotate; the overturning shaft (44) is provided with a flat cutting surface, on which two driving gears (48) are sleeved; the driving gears (48) are gap-fitted with the overturning shaft (44); the two chains (46) are respectively engaged with the two driving gears (48); the two width adjusting mechanisms (45) are respectively used to adjust the positions of the two chains (46) and the two driving gears (48) on the overturning shaft (44), so as to adjust the width between the two chains (46); the two clamping mechanisms (47) are respectively arranged on the two chains (46) and used to clamp the engine to be hoisted.

3. The multi-engine parallel overturning and hoisting system suitable for large-thrust engine test according to claim 2, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The width adjusting mechanism (45) comprises a driving motor (451) fixed to the turnover boom (43), a lead screw (452) arranged on the rotating shaft of the driving motor (451), a sliding rail (453) arranged on the turnover boom (43), a sliding block (454) arranged on the sliding rail (453) and threadedly connected with the lead screw (452), and two limiting plate assemblies (455) fixed to the sliding block (454) and sleeved on the turnover shaft (44); The two limiting plate assemblies (455) are respectively located at the axial two ends of the driving gear (48) and gap-fitted with the turnover shaft (44). 4.The multi-engine parallel overturning and hoisting system suitable for large-thrust engine test of claim 1 or 2 or 3, characterized in that: The first flatbed truck (6) and the second flatbed truck (11) are of the same structure. The first flatbed truck (6) comprises a hollow frame (61) matched with the outer shape of the first test frame (7), a first roller (62) arranged at the bottom of the hollow frame (61), a flat plate (63) arranged at the top of the hollow frame (61) in parallel, hinged members (67) arranged at the two sides of the flat plate (63), and second rollers (68) rotatably connected with the hinged members (67). The first roller (62) is matched with the first track (5). The flat plate (63) is provided with a U-shaped notch with an opening facing the first test frame (7); two pairs of opposite doors (65) capable of completely covering the U-shaped notch are arranged in the U-shaped notch. The two pairs of opposite doors (65) are respectively hinged to the two parallel walls of the U-shaped notch of the flat plate (63). The hinged members (67) are used to timely fold up the second rollers (68) so that the flat plate (63) falls on the hollow frame (61), so that the hollow frame (61) and the flat plate (63) become a whole, or to timely unfold the second rollers (68) so that the flat plate (63) is supported up, thereby being separated from the hollow frame (61). 5.The multi-engine parallel overturning and hoisting system suitable for large-thrust engine test of claim 4, characterized in that: The flat plate (63) is surrounded by a fence (64). The fence (64) is provided with an entrance (66) corresponding to the opening of the U-shaped notch. 6.The multi-engine parallel overturning and hoisting system suitable for large-thrust engine test of claim 4, characterized in that: It further comprises an engine transport vehicle (15) for carrying the engine to be hoisted.

7. A roll-on lift-off method suitable for high thrust engine testing, characterized by, The multi-engine parallel overturning and hoisting system suitable for large-thrust engine test of any one of claims 1-6 comprises the following steps: Step 1, moving a to-be-hoisted engine to a to-be-hoisted position in the first preparation room (1) of the I station, hoisting the overturning hoist (4) by the first crane (2) of the I station, hoisting the to-be-hoisted engine by the overturning hoist (4) and overturning it so that the nozzle of the to-be-hoisted engine is vertically downward; at the same time, another to-be-hoisted engine is transferred by the second preparation room (8), the second track (10), the second flatbed truck (11), and the second test frame (12) in the II station. Step 2, move the engine to be hoisted to the omnidirectional mobile vehicle (3) by the first crane (2) of the I station, disassemble the turnover lifting appliance (4), and move the turnover lifting appliance (4) to the original position by the first crane (2); Step 3, move the engine to be hoisted to the engine preparation station (14) through the coordinated channel (13) by the omnidirectional mobile vehicle (3), and perform preliminary preparation work on the engine to be hoisted; Step 4, after the preparation is completed, transport the engine to be hoisted to the first flatbed transport vehicle (6) by the omnidirectional mobile vehicle (3); transport the engine to be hoisted to the lower side of the first test bed (7) by the first flatbed transport vehicle (6), and complete the butt joint assembly work of the engine to be hoisted.

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