High-thrust engine turbine oxygen pump assembly test integrated test system and method

Abstract

The invention discloses a high-thrust engine turbine oxygen pump assembly test integrated test system and method, and belongs to the technical field of non-standard assembly process equipment. The test system comprises an assembly platform, a turnover assembly platform, an upper servo press, a lower servo press and an operation control system. All the systems are controlled through industrial control and a PLC to jointly complete automation function integration of assembling and testing of the turbine pump, so that an operator can control forward rotation / overturning of the positioner and control opening and closing of the upper-layer overturning plate and the middle-layer positioning table, and assembling work of a product in two directions is completed. The push-pull test of the two axial ends of the turbine pump is completed by controlling the functions of pressurization, force application, pressure maintaining and the like of the servo press. The test assembly system has the advantages of high automation degree, high positioning precision, high integration of assembly and test and the like, the labor intensity and safety risk of operators are reduced, and the assembly quality stability and efficiency of the turbine oxygen pump are improved.

Description

Technical Field

[0001] The present invention relates to an integrated test system and method for assembling and testing a turbine oxygen pump of a large-thrust engine, belonging to the technical field of non-standard assembly process equipment. Background Art

[0002] At present, turbine pumps of liquid rocket engines vary according to their technical specifications, functional requirements, and usage scenarios. Turbine pumps with the same function but different models have distinctive design structures, but their main structures have certain similarities. Compared with the turbine oxygen pumps of mass-produced flight models, the turbine oxygen pumps of heavy-lift launch vehicle engines are about 2.5 - 3 times heavier than those of conventional models, and their external structure dimensions are also greatly expanded compared with conventional models. The structure is relatively complex, and the assembly technology requirements are relatively stringent. In the initial stage of development, a simple frame platform was used for assembly, and the automatic flipping of the turbine oxygen pump - generator assembly could not be achieved. Flipping relied on 4 - 5 people to slowly carry out with the help of tools such as overhead cranes, tires, and wood. However, due to the irregular structure, large size, and heavier mass of the heavy-duty turbine oxygen pump compared with conventional models, product bumps and scratches are extremely likely to occur during the flipping process, affecting the product appearance and the internal key fit clearances; the two-way push-pull test relied on a simple jack for force application. The push-pull test was carried out using a jack and a self-made push-pull rod. It was impossible to ensure that the force application direction was coaxial with the rotor axis, the measured force data was inaccurate, and there was a sudden force release. The jack would move and the push-pull rod would slip, posing a great potential safety hazard; the assembly of key components such as bearings used manual press-fitting, which was prone to uneven or stuck insertion, and overly relied on the experience of operators, affecting the quality stability of the assembled products. At the same time, when assembling the turbine disk in a supine position under the turbine housing, the operator relied on both hands to hold the disk and continuously adjusted the orientation to align the spline. Due to the small space, the fingers were scratched by the labyrinth teeth during the upward pushing process.

[0003] In summary, the deficiencies of the traditional simple frame platform for assembling turbine oxygen pumps are as follows: the flipping during the product assembly process relies on manpower, and product bumps and vibrations are likely to occur; the two-way push-pull test relies on a simple jack for force application, and it is difficult to ensure the concentricity between the force application device and the turbine oxygen pump shafting, resulting in inaccurate test data; the manual press-fitting of key parts overly relies on the experience of operators, and has high requirements for the assembly level of operators. Summary of the Invention

[0004] The technical problem solved by the present invention is: overcoming the deficiencies of the prior art, providing an integrated test system and method for assembling and testing a turbine oxygen pump of a large-thrust engine, and solving the problems of time-consuming and laborious flipping and easy occurrence of bumps and scratches when using a traditional simple frame assembly platform for the turbine pump of a large-thrust engine.

[0005] The technical solution of the present invention is: In the first aspect, an integrated test system for assembling and testing a turbine oxygen pump of a large-thrust engine includes:

[0006] Assembly platform, including upper, middle and lower three - layer platforms and a tipping plate built with fixed trusses. A safety fence is set around the upper platform, and tool cabinets are installed outside the trusses for operators to store assembly tools.

[0007] Rotatable assembly platform, installed at the center of the upper platform, used for the installation and positioning of products during the assembly of turbine oxygen pumps.

[0008] Upper servo - press, a gantry - type press, installed on the upper platform of the assembly platform, moving through the guide rails installed on the assembly platform, used to apply downward pressure to the product during the assembly process.

[0009] Lower servo - press, a bench - type press, installed on the lower platform of the assembly platform, moving through the cylinder guide rails, used to apply upward pressure to the product during the assembly process.

[0010] Operation control system, installed on the upper platform of the assembly platform, used for personnel to control the opening and closing of the tipping plate of the assembly platform, the flipping action of the rotatable assembly platform, and the force - applying actions of the upper servo - press and the lower servo - press during the assembly operation.

[0011] Further, the assembly platform includes an upper platform, an upper tipping plate, a middle platform, a personnel passage, a DC servo cylinder and an assembly tool cabinet.

[0012] The upper tipping plate is connected to the inner side of the upper platform by a hinge, and a DC servo cylinder is installed at the bottom to realize the opening and closing of the upper tipping plate.

[0013] The middle platform is connected to the lower part of the upper platform by a hinge, and a DC servo cylinder is installed at the bottom to realize the opening and closing of the middle platform.

[0014] The personnel passage is a step passage for operators to climb onto the middle platform and the upper platform from the ground, and safety guardrails are installed outside the steps.

[0015] The assembly tool cabinet is installed below one side of the upper platform, used to store various tools required for assembly.

[0016] Further, the rotatable assembly platform includes an assembly positioning platform, a turntable and a turntable support mechanism.

[0017] The assembly positioning platform is installed in the middle of the upper platform of the assembly platform and is level with the upper platform.

[0018] The turntable is installed at both ends of the assembly positioning platform, used to control the flipping of the turbine oxygen pump assembly positioning platform.

[0019] The turntable support mechanism is installed on the lower platform of the assembly platform, used to fix the entire rotatable assembly platform and the turntable.

[0020] Furthermore, the upper servo press includes a servo electric cylinder, a truss structure, and a guide rail;

[0021] The servo electric cylinder is installed at the middle position of the truss structure and is used to apply a downward pressure from above the product;

[0022] The bottom of the truss structure is installed on the guide rail and can be pushed and slid along the guide rail;

[0023] The guide rail is fixed on the upper layer platform.

[0024] Furthermore, the lower servo press includes a servo electric cylinder, a support structure, a pneumatic guide rail, a middle-layer standing platform, and a DC servo electric cylinder;

[0025] The pneumatic guide rail is installed on the lower layer platform of the assembly station;

[0026] The bottom of the support structure is installed on the pneumatic guide rail and can move along the pneumatic guide rail;

[0027] The servo electric cylinder is installed on the support structure;

[0028] The middle-layer standing platform is hinged to the support structure and can be unfolded and folded under the control of the DC servo electric cylinder.

[0029] Furthermore, the control system includes a PLC control system and an industrial computer.

[0030] The PLC control system independently controls the flipping action of the flip-up assembly platform, controls the force application actions of the upper servo press and the lower servo press, and controls the DC servo electric cylinder, the servo electric cylinder, and the pneumatic guide rail;

[0031] The industrial computer is used for operators to operate and control the turbine oxygen pump assembly test integrated test system.

[0032] In a second aspect, a test method for a large-thrust engine turbine oxygen pump assembly test integrated test system according to the described one includes:

[0033] The assembly personnel use a gantry crane to dock the turbine oxygen pump with the assembly positioning platform, and complete the fixation and leveling of the turbine housing on the assembly positioning platform; subsequently, carry out the in-position turbine oxygen pump assembly work;

[0034] When the in-position assembly of the turbine oxygen pump is completed and the product is flipped for assembly, after the operator checks that there are no foreign objects placed above the upper flap, the upper flap is opened through the control system; after completion, the positioner is controlled to flip the entire assembly positioning platform and the connected product, and the positioner stops and locks itself after flipping to the 180° position; finally, the middle-layer platform is controlled to the horizontal state and locked, and the assembly personnel stand on the middle-layer platform to carry out assembly tests on the other end of the turbine oxygen pump;

[0035] After the operator completes the assembly of the turbine pump at the 180° position, control the middle layer platform to retract; then turn the assembly positioning platform and the product as a whole back to the correct position and close the upper flap; the product returns to the initial assembly position, and at this time, a push-pull test is carried out; manually move the upper servo press along its guide rail to the push-pull test position on the turbine pump; control the lower servo press to move to the push-pull test position on the lower side of the turbine pump through the cylinder guide rail; perform an axial push-pull test on the turbine oxygen pump through the control system.

[0036] Further, the assembly positioning platform can be reliably docked with the turbine oxygen pump, and the connection is reliable; the assembly docking surface is oil-free, smooth and clean.

[0037] Further, the upper flap and the bottom of the middle layer platform are equipped with DC servo electric cylinders, and the other ends of the electric cylinders are connected to the main structure of the assembly station; through the push-pull and hinge steering of the DC servo electric cylinders, the flipping of the upper flap and the middle layer platform is realized, so that the flap is in a horizontal or vertical posture.

[0038] Further, the positioner can be flipped 180°, and the rotation center of the assembly positioning platform is the center of gravity of the product; during the flipping process, the positioner moves smoothly, and the speed is adjusted as needed. After flipping to the 180° position, the positioner is self-locked; when the turbine pump is connected to the assembly positioning platform and rotates, the product does not interfere or collide with the inside of the assembly positioning platform;

[0039] The upper servo press and the lower servo press can perform separate push-pull experiments on both ends of the rotor along the axis. The force application process of the press is continuous, the single-direction force application Fmax is not less than 50KN, and the full-range accuracy is not lower than 2.5% FS; after reaching the target pressure, the pressure is maintained for no less than 60s, and the functions of continuous step-by-step pressurization and pressure maintenance in different gears are realized, meeting the requirements of independent force application in the positive and negative directions of the shaft system; the stroke of the force application system of the upper servo press and the lower servo press is 400mm, and the concentricity between the axes of the upper servo press and the lower servo press and the rotation center of the turbine pump assembly positioning platform is not greater than Φ3mm.

[0040] The advantages of the present invention compared with the prior art are as follows:

[0041] (1) For the large-thrust liquid rocket engine turbine pump assembly test integrated test system, the turbine oxygen pump of large thrust has a large pump cavity volume and a heavy weight, and it is difficult to manually flip it with a simple assembly table. The test bench integrates functions such as high-precision positioning and docking of the turbine oxygen pump and the positioning platform, motor-driven turbine worm flipping and positioning, and servo press fitting and testing, with a high degree of automation and assembly integration.

[0042] (2) The turbine pump assembly test integrated test system has the function of flipping and positioning the assembly platform within the range of 0-180°. The turbine worm positioning mechanism driven by the motor has the characteristics of flipping and self-locking the product at any position. It meets the requirements of easy operation and personnel safety during the product assembly process.

[0043] (3) Compared with the traditional simple assembly bench that uses a hydraulic jack for the axial push-pull test of the turbine oxygen pump, the integrated assembly test bench is equipped with two independent servo presses. It can perform separate push-pull tests on both ends of the turbine oxygen pump shaft system and can apply force continuously. The force application range is 0 - 50 KN, and the force application accuracy is 2.5% FS. The delay pressure holding time is not less than 60 s, and it can realize the functions of continuous step-by-step pressurization and pressure holding at different gears. Moreover, it integrates a high-precision assembly platform and upper and lower servo presses. The force application vector of the press acts on the axis, and the concentricity between the center of the force application device and the center of the clamping platform is ≤ Φ3 mm, which greatly improves the assembly test accuracy. It greatly simplifies the assembly test link of the turbine oxygen pump, improves the assembly quality and efficiency of the turbine oxygen pump, and at the same time reduces the labor intensity of front-line personnel. It greatly simplifies the physical labor of operators. Description of the Drawings

[0044] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0045] Figure 1 is the general layout diagram of the integrated system for the assembly test of the turbine oxygen pump;

[0046] Figure 2 is the schematic diagram of the partial structure of the assembly platform;

[0047] Figure 3 is the schematic diagram of the partial structure of the assembly platform;

[0048] Figure 4 is the schematic diagram of the structure of the flip-up assembly platform;

[0049] Figure 5 is the schematic diagram of the structure of the upper servo press;

[0050] Figure 6 is the schematic diagram of the structure of the lower servo press;

[0051] Figure 7 is the connection diagram of the control system and the industrial control computer. Detailed Embodiments

[0052] In order to better understand the above technical solutions, the technical solutions of the present invention will be described in detail below through the drawings and specific embodiments. It should be understood that the specific features in the embodiments of the present invention and the embodiments are detailed descriptions of the technical solutions of the present invention, rather than limitations on the technical solutions of the present invention. Without conflict, the technical features in the embodiments of the present invention and the embodiments can be combined with each other.

[0053] The following further elaborates on a large-thrust engine turbine oxygen pump assembly test integrated test system and method provided by an embodiment of the present invention in conjunction with the accompanying drawings of the specification. For example, Figure 1 the specific implementation may include:

[0054] An assembly station 1, including upper, middle, and lower platforms and a flap built by a fixed truss. A safety fence is set around the upper platform 1-1, and a tool storage cabinet is placed outside the truss for operators to store assembly tools;

[0055] A rotatable assembly platform 2, installed at the center of the upper platform 1-1, for the installation and positioning of products during the assembly of the turbine oxygen pump;

[0056] An upper servo press 3, which is a gantry press, installed on the upper platform 1-1 of the assembly station, and moves through a guide rail installed on the assembly station 1, used to apply a downward pressure to the product during the assembly process;

[0057] A lower servo press 4, which is a bench press, installed on the lower platform of the assembly station 1, and moves through a cylinder guide rail, used to apply an upward pressure to the product during the assembly process;

[0058] An operation control system 5, installed on the upper platform 1-1 of the assembly station 1, used for personnel to control the opening and closing of the flap of the assembly station 1, the flipping action of the rotatable assembly platform 2, and the force application actions of the upper servo press 3 and the lower servo press 4 during the assembly operation.

[0059] Furthermore, for example, Figure 2 、 Figure 3 the assembly station 1 includes an upper platform 1-1, an upper flap 1-2, a middle platform 1-3, a personnel passage 1-4, a DC servo electric cylinder 1-5, and an assembly tool cabinet 1-6;

[0060] The upper flap 1-2 is connected to the inner side of the upper platform 1-1 through a hinge, and a DC servo electric cylinder is installed at the bottom to realize the opening and closing of the upper flap 1-2;

[0061] The middle platform 1-3 is connected to the lower part of the upper platform 1-1 through a hinge, and a DC servo electric cylinder 1-5 is installed at the bottom to realize the opening and closing of the middle platform 1-3;

[0062] The personnel passage 1-4 is a step passage for operators to climb onto the middle platform 1-3 and the upper platform 1-1 from the ground, and safety guardrails are installed outside the steps.

[0063] The assembly tool cabinet 1-6 is installed below one side of the upper platform 1-1 for storing various tools required for assembly.

[0064] In a possible implementation manner, for example,Figure 4 The flip - type assembly platform 2 includes an assembly positioning platform 2 - 1, a positioner 2 - 2 and a positioner support mechanism 2 - 3;

[0065] The assembly positioning platform 2 - 1 is installed at the middle position of the upper platform 1 - 1 of the assembly station 1 and is kept horizontal with the upper platform 1 - 1;

[0066] The positioner 2 - 2 is installed at both ends of the assembly positioning platform 2 - 1 and is used to control the flipping of the turbine oxygen pump assembly positioning platform 2 - 1;

[0067] The positioner support mechanism 2 - 3 is installed on the lower platform of the assembly station 1 and is used to fix the entire flip - type assembly platform 2 and the positioner 2 - 2.

[0068] Optionally, as Figure 5 The upper servo press 3 includes a servo electric cylinder 3 - 1, a truss structure 3 - 2 and a guide rail 3 - 3;

[0069] The servo electric cylinder 3 - 1 is installed at the middle position of the truss structure 3 - 2 and is used to apply a downward pressure from above the product;

[0070] The bottom of the truss structure 3 - 2 is installed on the guide rail 3 - 3 and can be pushed and slid along the guide rail 3 - 3;

[0071] The guide rail 3 - 3 is fixed on the upper platform 1 - 1.

[0072] Furthermore, as Figure 6 The lower servo press 4 includes a servo electric cylinder 4 - 1, a support structure 4 - 2, a pneumatic guide rail 4 - 3, a middle - layer station platform 4 - 4 and a DC servo electric cylinder 4 - 5;

[0073] The pneumatic guide rail 4 - 3 is installed on the lower platform of the assembly station;

[0074] The bottom of the support structure 4 - 2 is installed on the pneumatic guide rail 4 - 3 and can move along the pneumatic guide rail;

[0075] The servo electric cylinder 4 - 1 is installed on the support structure 4 - 2;

[0076] The middle - layer station platform 4 - 4 is hinge - connected to the support structure 4 - 2 and can be unfolded and folded under the control of the DC servo electric cylinder 4 - 5.

[0077] In a possible implementation manner, as Figure 7 The control system includes a PLC control system 5 - 1 and an industrial computer 5 - 2.

[0078] The PLC control system 5-1 independently controls the flipping action of the flip-up assembly platform 2, controls the force application actions of the upper servo press 3 and the lower servo press 4, and controls the DC servo cylinder 1-5, the servo cylinder 4-1, and the pneumatic guide rail 4-3.

[0079] The industrial control computer 5-2 is used for operators to operate and control the turbine oxygen pump assembly test integrated test system.

[0080] In a second aspect, based on the same inventive concept, the present invention also provides a test method for a large-thrust engine turbine oxygen pump assembly test integrated test system according to the described one, including:

[0081] The assembly personnel use a gantry crane to dock the turbine oxygen pump with the assembly positioning platform 2-1, and complete the fixing and leveling of the turbine housing on the assembly positioning platform 2-1; then carry out the in-position turbine oxygen pump assembly work.

[0082] When the in-position assembly of the turbine oxygen pump is completed and the flipped product assembly is carried out, after the operator checks that there are no foreign objects placed above the upper flap 1-2, the upper flap 1-2 is opened through the control system; after completion, the positioner 2-2 is controlled to flip the assembly positioning platform 2-1 and the connected product as a whole, and the positioner 2-2 stops and locks itself after flipping to the 180° position; finally, the middle platform 1-3 is controlled to the horizontal state and locked, and the assembly personnel stand on the middle platform 1-3 to carry out assembly tests on the other end of the turbine oxygen pump.

[0083] When the operator completes the assembly of the turbine pump at the 180° position, the middle platform 1-3 is controlled to retract; then the assembly positioning platform 2-1 and the product are flipped back to the in-position as a whole, and the upper flap 1-2 is closed; the product returns to the initial assembly position, and at this time, a push-pull test is carried out; the upper servo press 3 is manually moved along its guide rail to the push-pull test position on the turbine pump; the lower servo press 4 is controlled to move to the push-pull test position below the turbine pump through the cylinder guide rail; the axial push-pull test of the turbine oxygen pump is carried out through the control system.

[0084] In the solution provided by the embodiments of the present invention, as Figure 1As shown in the figure, the integrated test system for the assembly and test of the large-thrust engine turbine oxygen pump adopted by the present invention is composed of an assembly platform 1, a rotatable assembly platform 2, an upper servo press 3, a lower servo press 4 and an operation control system 5. Among them, the assembly platform 1 includes an upper station platform 1-1, an upper flap 1-2, a middle platform 1-3, a DC servo electric cylinder 1-5, a personnel passage 1-4 and an assembly tool cabinet 1-6. The rotatable assembly platform 2 includes a turbine oxygen pump assembly positioning platform 2-1, a turntable 2-2 and a turntable support mechanism 2-3. The upper servo press 3 includes a servo electric cylinder 3-1, a truss structure 3-2 and a guide rail 3-3. The lower servo press 4 includes a servo electric cylinder 4-1, a support structure 4-2, a pneumatic guide rail 4-3, a middle station platform 4-4 and a DC servo electric cylinder 4-5. The control system is composed of a Siemens PLC control system 5-1 and an industrial control computer 5-2.

[0085] Embodiment:

[0086] When the test object is the assembly of the turbine oxygen pump, the specific assembly steps are as follows:

[0087] (1) The assembly personnel open the movable fence in the safety guardrail, hoist the product to the assembly platform by a truss crane, and complete the connection and positioning of the product with the turbine oxygen pump assembly positioning platform 2-1. The assembly positioning platform 2-1 can complete the connection, fixation and leveling of the turbine housing.

[0088] (2) When the connection and positioning of the product are completed, the assembly work is carried out. When it is necessary to turn over the product for assembly, after the operator checks that there are no foreign objects above the upper flap 1-2, the upper flap is opened by controlling the servo electric cylinder 1-5. Subsequently, the turntable 2-2 turns the assembly positioning platform 2-1 and the product as a whole. After turning to the 180° position, the turntable stops moving and the reducer inside the turntable is self-locked. Finally, the servo electric cylinder 4-5 is controlled to turn the middle platform 1-3 to the horizontal position, and the assembly personnel then stand on the middle platform 1-3 to assemble and test the housing on the other side of the turbine oxygen pump.

[0089] (3) After the operator completes the assembly of the turbine pump at the 180° position, control the servo cylinder 4-5 to flip the middle station platform to the retracted state. Subsequently, the positioner 2-2 moves back to the zero position, and finally the servo cylinder 1-5 operates to close the upper flap 1-2. The assembly positioning platform 2-1 and the product return to the initial assembly position. At this time, a push-pull test is carried out. Manually move the upper servo press truss structure 3-2 along its guide rail 3-3 to the push-pull test position on the turbine pump. Control the movement of the lower servo press support structure 4-2 to the push-pull test position on the lower side of the turbine pump through the pneumatic guide rail 4-3. The operator controls the servo cylinders 3-1 and 4-1 of the upper and lower servo presses respectively, apply force evenly and smoothly at a gradient of 5000N and hold the pressure for 60s, and continuously complete the axial push-pull test in two directions, namely the oxygen pump end and the turbine end, of the turbine oxygen pump with a range of 0-50KN. The entire push-pull test process is completed by the operator controlling the PLC control system 5-1 through the industrial control computer 5-2.

[0090] Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

[0091] The content not described in detail in the specification of the present invention belongs to the well-known technology of those skilled in the art.

Claims

1. An integrated test system for the assembly and testing of a high-thrust engine turbine oxygen pump, characterized in that, Including: An assembly platform (1), including upper, middle and lower three - layer platforms and a tipping plate built by fixed trusses. A safety fence is set around the upper platform (1 - 1), and tool cabinets are placed outside the trusses for operators to store assembly tools; A rotatable assembly platform (2), installed at the central part of the upper platform (1 - 1), used for the installation and positioning of products during the assembly of turbine oxygen pumps; An upper servo - press (3), which is a gantry press, installed on the upper platform (1 - 1) of the assembly platform, and moves through the guide rails installed on the assembly platform (1), used to apply a downward pressure to the product during the assembly process; A lower servo - press (4), which is a bench press, installed on the lower platform of the assembly platform (1), and moves through a cylinder guide rail, used to apply an upward pressure to the product during the assembly process; An operation control system (5), installed on the upper platform (1 - 1) of the assembly platform (1), used for personnel to control the opening and closing of the tipping plate of the assembly platform (1), the tipping action of the rotatable assembly platform (2), and the force - applying actions of the upper servo - press (3) and the lower servo - press (4) during the assembly operation.

2. The integrated test system for assembling and testing a large-thrust engine turbine oxygen pump according to claim 1, characterized in that The assembly platform (1) includes an upper platform (1 - 1), an upper tipping plate (1 - 2), a middle platform (1 - 3), a personnel passage (1 - 4), a DC servo cylinder (1 - 5) and an assembly tool cabinet (1 - 6); The upper tipping plate (1 - 2) is connected to the inner side of the upper platform (1 - 1) by a hinge, and a DC servo cylinder is installed at the bottom to realize the opening and closing of the upper tipping plate (1 - 2); The middle platform (1 - 3) is connected to the lower part of the upper platform (1 - 1) by a hinge, and a DC servo cylinder (1 - 5) is installed at the bottom to realize the opening and closing of the middle platform (1 - 3); The personnel passage (1 - 4) is a step passage for operators to climb onto the middle platform (1 - 3) and the upper platform (1 - 1) from the ground, and safety guardrails are installed outside the steps. The assembly tool cabinet (1 - 6) is installed below one side of the upper platform (1 - 1) for storing various tools required for assembly.

3. The integrated test system for the assembly and test of a large-thrust engine turbine oxygen pump according to claim 2, characterized in that, The rotatable assembly platform (2) includes an assembly positioning platform (2 - 1), a positioner (2 - 2) and a positioner support mechanism (2 - 3); The assembly positioning platform (2 - 1) is installed at the middle position of the upper platform (1 - 1) of the assembly platform (1) and is kept horizontal with the upper platform (1 - 1); The positioner (2 - 2) is installed at both ends of the assembly positioning platform (2 - 1) for controlling the tipping of the turbine oxygen pump assembly positioning platform (2 - 1); The positioner support mechanism (2 - 3) is installed on the lower platform of the assembly platform (1) for fixing the entire rotatable assembly platform (2) and the positioner (2 - 2).

4. A large-thrust engine turbine oxygen pump assembly test integrated test system according to claim 1, characterized in that, The upper servo - press (3) includes a servo cylinder (3 - 1), a truss structure (3 - 2) and a guide rail (3 - 3); The servo cylinder (3 - 1) is installed at the middle position of the truss structure (3 - 2) for applying a downward pressure from above the product; The bottom of the truss structure (3 - 2) is installed on the guide rail (3 - 3) and can be pushed and slid along the guide rail (3 - 3); The guide rail (3 - 3) is fixed on the upper platform (1 - 1).

5. The integrated test system for assembling and testing a large-thrust engine turbine oxygen pump according to claim 1, characterized in that The lower servo press (4) includes a servo electric cylinder (4-1), a support structure (4-2), a pneumatic guide rail (4-3), a middle-layer standing platform (4-4), and a DC servo electric cylinder (4-5); The pneumatic guide rail (4-3) is installed on the lower platform of the assembly station; The bottom of the support structure (4-2) is installed on the pneumatic guide rail (4-3) and can move along the pneumatic guide rail; The servo electric cylinder (4-1) is installed on the support structure (4-2); The middle-layer standing platform (4-4) is hinged to the support structure (4-2) and can be unfolded and folded under the control of the DC servo electric cylinder (4-5).

6. The integrated test system for assembling and testing a large-thrust engine turbine oxygen pump according to claim 1, characterized in that, The control system includes a PLC control system (5-1) and an industrial computer (5-2). The PLC control system (5-1) independently controls the flipping action of the flip-up assembly platform (2), controls the force application actions of the upper servo press (3) and the lower servo press (4), and controls the DC servo electric cylinder (1-5), the servo electric cylinder (4-1), and the pneumatic guide rail (4-3); The industrial computer (5-2) is used for operators to operate and control the turbine oxygen pump assembly test integrated test system.

7. A test method for a test integration test system of a large-thrust engine turbine oxygen pump according to claim 3, characterized in that, It includes: Assembly workers use a gantry crane to dock the turbine oxygen pump with the assembly positioning platform (2-1), and fix and level the turbine housing on the assembly positioning platform (2-1); then carry out the in-position turbine oxygen pump assembly work; When the in-position assembly of the turbine oxygen pump is completed and the flipped product assembly is carried out, after the operator checks that there are no foreign objects placed above the upper flap (1-2), the upper flap (1-2) is opened through the control system; after completion, the positioner (2-2) is controlled to flip the assembly positioning platform (2-1) and the connected product as a whole. After flipping to the 180° position, the positioner (2-2) stops moving and locks itself; finally, the middle platform (1-3) is controlled to the horizontal state and locked, and the assembly worker stands on the middle platform (1-3) to carry out assembly tests on the other end of the turbine oxygen pump; When the operator completes the assembly of the turbine pump at the 180° position, the middle platform (1-3) is controlled to retract; then the assembly positioning platform (2-1) and the product as a whole are flipped back to the in-position, and the upper flap (1-2) is closed; the product returns to the initial assembly position, and at this time, a push-pull test is carried out; the upper servo press (3) is manually moved along its guide rail to the push-pull test position of the turbine pump; the lower servo press (4) is controlled to move to the lower push-pull test position of the turbine pump through the cylinder guide rail; the axial push-pull test of the turbine oxygen pump is carried out through the control system.

8. The test method according to claim 7, wherein The assembly positioning platform (2-1) can be reliably docked with the turbine oxygen pump, and the connection is reliable; the assembly docking surface is oil-free, smooth, and clean.

9. The test method according to claim 7, characterized in that The upper flap (1-2) and the bottom of the middle platform (1-3) are equipped with a DC servo electric cylinder (1-5), and the other end of the electric cylinder is connected to the main structure of the assembly station (1); through the push-pull of the DC servo electric cylinder and the hinge rotation, the flipping of the upper flap (1-2) and the middle platform (1-3) is realized, so that the flap is in a horizontal or vertical posture.

10. The test method according to claim 7, characterized in that, The positioner (2-2) can be flipped by 180°, and the center of rotation of the assembly positioning platform (2-1) is the center of gravity of the product; during the flipping process, the positioner (2-2) operates smoothly, and the speed can be adjusted as needed. After flipping to the 180° position, the positioner is self-locked; when the turbine pump is connected to the upper part of the assembly positioning platform (2-1) and rotates, the product does not interfere or collide with the inside of the assembly positioning platform (2-1). The upper servo press (3) and the lower servo press (4) can perform separate push-pull experiments on both ends of the rotor along the axis. The force application process of the press is continuous, the one-way force application Fmax is not less than 50KN, and the full-scale accuracy is not lower than 2.5% FS; after reaching the target pressure, the pressure is maintained for no less than 60s, realizing the functions of continuous step-by-step pressurization and pressure maintenance in different gears, meeting the requirements of independent force application in the positive and negative directions of the shafting; the stroke of the force application system of the upper servo press (3) and the lower servo press (4) is 400mm, and the concentricity between the axes of the upper servo press (3) and the lower servo press (4) and the center of rotation of the turbine pump assembly positioning platform (2-1) is not greater than Φ3mm.

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