Propeller blade electro-hydraulic servo loading simulation device

Abstract

The invention discloses a propeller blade electro-hydraulic servo loading simulation device which comprises a propeller hub or a propeller variable pitch device, a propeller root simulation piece arranged in the circumferential direction of the propeller hub or the propeller variable pitch device, and a loading device connected with the propeller hub or the propeller variable pitch device through the propeller root simulation piece. The loading control system is used for controlling the loading device to carry out coordinated loading, the loading hydraulic system is used for providing an oil source for the loading device, the simulation system is used for establishing a propeller load model, the simulation system is electrically connected with the loading control system, the loading control system is electrically connected with the loading hydraulic system, and the loading hydraulic system is electrically connected with the simulation system. The propeller load model is established through the simulation system, so that the external load generated in the flight process of the simulated propeller is simulated, the reliability and authenticity of the test are improved, meanwhile, the number of times of test run on a rack is reduced, and the project development cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of electro-hydraulic servo loading test benches, and in particular to an electro-hydraulic servo loading simulation device for propeller blades. Background Art

[0002] During actual flight, the propeller will be affected by the combined forces of aerodynamic torque, blade centrifugal torque and counterweight arm centrifugal torque when working. Therefore, the flight environment cannot be truly simulated when the propeller is not rotating on the ground and undergoing functional performance and semi-physical simulation tests and verifications without load. As a result, the calculation results of the propeller are not accurate during the functional performance and semi-physical simulation tests and verifications.

[0003] Therefore, a propeller blade electro-hydraulic servo loading simulation device is designed to simulate the external loads generated during the propeller flight and apply it to the propeller under test, thereby increasing the reliability and authenticity of the test and improving the forward design capability. At the same time, it can reduce the number of necessary bench tests and reduce the project development cost, which is a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a propeller blade electro-hydraulic servo loading simulation device, which is used to simulate the external load generated during the propeller flight and apply it to the propeller under test, thereby increasing the reliability and authenticity of the test and improving the forward design capability. At the same time, it can reduce the number of test runs that must be carried out on the bench and reduce the project development cost.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] A propeller blade electro-hydraulic servo loading simulation device includes a propeller hub or a propeller pitch change device, a blade root simulation member arranged in the circumferential direction of the propeller hub or the propeller pitch change device, a loading device connected to the propeller hub or the propeller pitch change device via the blade root simulation member, a loading control system for controlling the loading device to coordinate loading, a loading hydraulic system for providing an oil source for the loading device, and a simulation system for establishing a propeller load model, wherein the simulation system is electrically connected to the loading control system, and the loading control system is electrically connected to the loading hydraulic system.

[0007] Preferably, the loading device includes a coupling connected to the propeller root simulation member, a swing hydraulic cylinder connected to the coupling through a torque sensor, a hydraulic cylinder support plate for supporting the swing hydraulic cylinder, and a protection module servo valve and encoder arranged on the swing hydraulic cylinder.

[0008] Preferably, the loading control system includes a host computer, a SpeedGoat high-performance real-time simulation target machine, and supporting components such as a programmable power supply and a signal junction box.

[0009] Preferably, the loading hydraulic system comprises an oil tank, a hydraulic pump connected to the oil tank, and an electric motor providing power to the hydraulic pump, one end of the hydraulic pump is connected to the oil tank through a pipeline, and the other end of the hydraulic pump is respectively connected to a main pipeline, a first branch pipeline, and a second branch pipeline through a first one-way valve;

[0010] The first branch pipeline is connected to the oil tank through an electromagnetic overflow valve and a proportional regulating valve respectively;

[0011] The second branch pipeline is respectively connected to a pressure sensor, a first pressure gauge and an accumulator;

[0012] The main pipeline is connected to the main oil inlet pipeline in a direction away from the first one-way valve through the first pipeline filter, the second pipeline filter and the first ball valve in sequence;

[0013] The oil outlet end of the total oil inlet pipeline is connected to the oil inlet of the swing hydraulic cylinder, the oil return port of the swing hydraulic cylinder is connected to the total oil return pipeline, and the total oil return pipeline is connected to the oil tank through the second ball valve and the oil return filter in sequence;

[0014] The oil tank is also connected to a second one-way valve, which is connected to a circulation pump group and a circulation filter respectively through a second pressure gauge on a pipeline away from the oil tank. The circulation pump group is connected to the oil tank, and the circulation filter is connected to the oil tank through a cooler.

[0015] Preferably, the oil tank is also provided with an air filter, a liquid level relay, a temperature sensor, a heater, and an oil drain ball valve.

[0016] Preferably, the number of the swing hydraulic cylinders is 8, and the oil outlet end of the total oil inlet pipeline is respectively connected to the third ball valve, the fourth ball valve, the fifth ball valve, the sixth ball valve, the seventh ball valve, the eighth ball valve, the ninth ball valve and the tenth ball valve, the third ball valve is connected to the oil inlet of the first swing hydraulic cylinder through the first servo valve and the first safety protection module, and the oil return port of the first swing hydraulic cylinder is connected to the total oil return pipeline through the first servo valve and the eleventh ball valve in sequence;

[0017] The fourth ball valve is connected to the oil inlet of the second swing hydraulic cylinder through the second servo valve and the second safety protection module, and the oil return port of the second swing hydraulic cylinder is connected to the main oil return pipeline through the second servo valve and the twelfth ball valve in sequence;

[0018] The fifth ball valve is connected to the oil inlet of the third swing hydraulic cylinder through the third servo valve and the third safety protection module, and the oil return port of the third swing hydraulic cylinder is connected to the main oil return pipeline through the third servo valve and the thirteenth ball valve in sequence;

[0019] The sixth ball valve is connected to the oil inlet of the fourth swing hydraulic cylinder through the fourth servo valve and the fourth safety protection module, and the oil return port of the fourth swing hydraulic cylinder is connected to the main oil return pipeline through the fourth servo valve and the fourteenth ball valve in sequence;

[0020] The seventh ball valve is connected to the oil inlet of the fifth swing hydraulic cylinder through the fifth servo valve and the fifth safety protection module, and the oil return port of the fifth swing hydraulic cylinder is connected to the main oil return pipeline through the fifth servo valve and the fifteenth ball valve in sequence;

[0021] The eighth ball valve is connected to the oil inlet of the sixth swing hydraulic cylinder through the sixth servo valve and the sixth safety protection module, and the oil return port of the sixth swing hydraulic cylinder is connected to the main oil return pipeline through the sixth servo valve and the sixteenth ball valve in sequence;

[0022] The ninth ball valve is connected to the oil inlet of the seventh swing hydraulic cylinder through the seventh servo valve and the seventh safety protection module, and the oil return port of the seventh swing hydraulic cylinder is connected to the main oil return pipeline through the seventh servo valve and the seventeenth ball valve in sequence;

[0023] The tenth ball valve is connected to the oil inlet of the eighth swing hydraulic cylinder through the eighth servo valve and the eighth safety protection module, and the oil return port of the eighth swing hydraulic cylinder is connected to the main oil return pipeline through the eighth servo valve and the eighteenth ball valve in turn.

[0024] Preferably, the propeller root simulation part is a metal part.

[0025] Preferably, there are six or eight blade root simulation parts.

[0026] Preferably, the blade root simulation member is connected to the coupling via a flat key.

[0027] Compared with the prior art, the present invention has achieved the following technical effects:

[0028] A propeller load model is established through the simulation system to calculate the torque load on the blades under various flight conditions, and the load torque is applied to the propeller hub or the propeller pitch change device in the form of a combined torque through a loading device. The loading hydraulic system provides an oil source for the loading device, and the loading control system monitors the force (torque) and displacement (angle) outputs of the loading simulation device in real time to simulate the external loads generated during the simulated propeller flight, increase the reliability and authenticity of the test, and improve the forward design capability. At the same time, it can reduce the number of test bench tests required and reduce project development costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] Attached Figure 1 It is a schematic diagram of a principle block diagram of a propeller blade electro-hydraulic servo loading simulation device disclosed in an embodiment of the present invention;

[0031] Attached Figure 2 It is a schematic diagram of the overall structure of an 8-channel loading device of a propeller blade electro-hydraulic servo loading simulation device disclosed in an embodiment of the present invention;

[0032] Attached Figure 3 It is a schematic diagram of the overall structure of a single-channel loading device of a propeller blade electro-hydraulic servo loading simulation device disclosed in an embodiment of the present invention;

[0033] Attached Figure 4 A schematic diagram of a loading simulation angle design structure of a propeller blade electro-hydraulic servo loading simulation device disclosed in an embodiment of the present invention;

[0034] Attached Figure 5 It is a schematic diagram of the hydraulic principle of the loading hydraulic system of the propeller blade electro-hydraulic servo loading simulation device disclosed in an embodiment of the present invention.

[0035] Among them, 1. hydraulic pump; 2. electric motor; 3. first one-way valve; 4. electromagnetic overflow valve; 5. proportional overflow valve; 6. pressure sensor; 7. first pressure gauge; 8. accumulator; 9. first pipeline filter; 10. second pipeline filter; 11. first ball valve; 12. third ball valve; 13. first servo valve; 14. first safety protection module; 15. first swing hydraulic cylinder; 16. eleventh ball valve; 17. fourth ball valve; 18. second servo valve; 19. second safety protection module ; 20, second swing hydraulic cylinder; 21, twelfth ball valve; 22, fifth ball valve; 23, third servo valve; 24, third safety protection module; 25, third swing hydraulic cylinder; 26, thirteenth ball valve; 27, sixth ball valve; 28, fourth servo valve; 29, fourth safety protection module; 30, fourth swing hydraulic cylinder; 31, fourteenth ball valve; 32, seventh ball valve; 33, fifth servo valve; 34, fifth safety protection module; 35, fifth swing hydraulic cylinder; 36, fifteenth ball valve ; 37, the eighth ball valve, 38, the sixth servo valve, 39, the sixth safety protection module, 40, the sixth swing hydraulic cylinder, 41, the sixteenth ball valve, 42, the ninth ball valve, 43, the seventh servo valve, 44, the seventh safety protection module, 45, the seventh swing hydraulic cylinder, 46, the seventeenth ball valve, 47, the tenth ball valve, 48, the eighth servo valve, 49, the eighth safety protection module, 50, the eighth swing hydraulic cylinder, 51, the eighteenth ball valve, 52, the second ball valve, 53, the return oil filter, 54 , circulation pump group; 55, second one-way valve; 56, second pressure gauge; 57, circulation filter; 58, cooler; 59, air filter; 60, liquid level relay; 61, temperature sensor; 62, heater; 63, oil tank; 64, drain ball valve; 65, propeller hub; 66, propeller root simulation; 67, loading device; 68, coupling; 69, torque sensor; 70, hydraulic cylinder support plate; 71, protection module servo valve; 72, swing hydraulic cylinder; 73, encoder. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] The purpose of the present invention is to provide a propeller blade electro-hydraulic servo loading simulation device, which is used to simulate the external load generated during the propeller flight and apply it to the propeller under test, thereby increasing the reliability and authenticity of the test, improving the forward design capability, and at the same time reducing the number of bench tests required and reducing the project development cost.

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] refer to Figure 1 and Figure 2 The propeller blade electro-hydraulic servo loading simulation device disclosed in the embodiment of the present invention includes a propeller hub 65 or a propeller pitch change device, and the propeller hub 65 or the propeller pitch change device is provided with a blade root simulation member 66 in the circumferential direction, and the blade root simulation member 66 is provided with a loading device 67 away from the propeller hub 65 or the propeller pitch change device. The loading device 67 is used to provide a loading force for the blade root test piece, and the loading device 67 is controlled by a loading control system to achieve coordinated loading of the loading force. The loading device 67 provides an oil source through a loading hydraulic system, and also includes a simulation system for establishing a propeller load model, and the simulation system is electrically connected to the loading control system. The loading control system The system is electrically connected to the loading hydraulic system, and a propeller load model is established through the simulation system, so as to calculate the torque load borne by the blade under various flight conditions, and the load torque is applied to the propeller hub or the propeller pitch device through the loading device 67 in the form of a combined torque, and the loading hydraulic system provides an oil source for the loading device 67, and the force (torque) and displacement (angle) output of the loading simulation device are monitored in real time through the loading control system to simulate the external load generated during the flight of the simulated propeller, increase the reliability and authenticity of the test, improve the forward design capability, and at the same time reduce the number of bench tests required, thereby reducing the project development cost;

[0040] It should be noted that the loading control system can collect and store the filtered electrical signals. The collected signals are subjected to a certain proportional operation to obtain the current force and displacement data, and the force and displacement values ​​are displayed and stored in real time. At the same time, the force and displacement values ​​are also used as feedback for the PID control of the load simulation system software to correct the control output of the load simulation system in real time. When the system encounters abnormal conditions such as communication interruption, displacement exceeding the limit, loading force exceeding the limit, etc., the system software will issue an alarm prompt on the corresponding interface.

[0041] refer to Figure 1 and Figure 2As an implementation mode, the loading device 67 includes a coupling 68 connected to the blade root simulation member 66, the coupling 68 is connected to the swing hydraulic cylinder 72, a torque sensor 69 is arranged between the swing hydraulic cylinder 72 and the coupling 68, a hydraulic cylinder support plate 70 for supporting the swing hydraulic cylinder 72 is arranged on the swing hydraulic cylinder 72, and a protection module servo valve 71 and an encoder 73 are also arranged on the swing hydraulic cylinder 72. The loading device 67 adopts an electro-hydraulic servo system with force as the adjusted amount. The loading device 67 is equipped with a torque sensor 69 and an encoder 73, which can monitor the force (torque) and displacement (angle) output on the recording device in real time.

[0042] refer to Figure 1 and Figure 2 As an implementation method, the loading control system includes a host computer, a SpeedGoat high-performance real-time simulation target machine, and supporting components such as a programmable power supply and a signal junction box. A separate voltage-stabilized linear power supply is used to power the sensor to ensure the stable operation of the torque sensor 69 and the encoder 73. When the loading simulation device is working, the torque sensor 69 and the rotary encoder 73 will output an electrical signal corresponding to the force and displacement of the current load. The electrical signal is transmitted to the signal adjustment module via a shielded cable. The signal adjustment module can adjust the volt value of the electrical signal and filter the electrical signal. The adjusted signal is input to the signal acquisition module. The loading control system can collect and store the filtered electrical signal. The collected signal is subjected to a certain proportional operation to obtain the current force and displacement data, and the force and displacement values ​​are displayed and stored in real time. At the same time, the force and displacement values ​​are also used as feedback for the PID control of the load simulation system software to correct the control output of the load simulation system in real time.

[0043] refer to Figure 5 As an embodiment, the loading hydraulic system includes an oil tank 63, the oil outlet end of the oil tank 63 is connected to the hydraulic pump 1, the hydraulic pump 1 is powered by the motor 2 connected thereto, one end of the hydraulic pump 1 is connected to the oil tank 63 through a pipeline, the other end of the hydraulic pump 1 is respectively connected to the main line, the first branch line and the second branch line through the first one-way valve 3, the first branch line is respectively connected to the oil tank 63 through the electromagnetic overflow valve 4 and the proportional regulating valve, the second branch line is respectively connected to the pressure sensor 6, the first pressure gauge 7 and the accumulator 8, the main line is connected to the main oil inlet line through the first line filter 9, the second line filter 10 and the first ball valve 11 in the direction away from the first one-way valve 3, the oil outlet end of the main oil inlet line is connected to the oil inlet of the swing hydraulic cylinder 72, the oil return port of the swing hydraulic cylinder 72 is connected to the main oil return line, and the main oil return line is connected to the oil tank 63 through the second ball valve 52 and the oil return filter 53 in sequence;

[0044] The oil tank 63 is also connected to a second one-way valve 55. The second one-way valve 55 is connected to the circulation pump group 54 and the circulation filter 57 through a second pressure gauge 56 on the pipeline away from the oil tank 63. The circulation pump group 54 is connected to the oil tank 63, and the circulation filter 57 is connected to the oil tank 63 through a cooler 58.

[0045] The hydraulic pump 1 mainly converts mechanical energy into hydraulic energy, provides pressure and flow, the motor 2 converts electrical energy into mechanical energy, drives the hydraulic pump 1, the first one-way valve 3 and the second one-way valve 55 can prevent hydraulic shock, the electromagnetic relief valve 4 plays a role in safety protection, the proportional relief valve 5 can adjust the system pressure, the pressure sensor 6 can measure the medium pressure, transmit the signal to the control system, and form a closed-loop control with the proportional relief valve 5, the first pressure gauge 7 and the second pressure gauge 56 display the medium pressure, which is convenient for inspection and fault handling, the accumulator 8 is used to stabilize the system pressure and prevent pressure shock, the first pipeline filter 9 and the second pipeline filter 10 are used to clean the hydraulic medium to prevent Contaminants enter the system. The first ball valve 11 and the second ball valve 52 are used to cut off the pipeline to prevent the medium from flowing out during maintenance. The servo valve controls the rotational movement of the loading swing cylinder. The swing hydraulic cylinder 72 is the actuator of the loading device 67, which is used to implement load addition. The return oil filter 53 is used to clean the hydraulic medium and prevent contaminants from entering the system. The circulating pump group 54 is a combination of a circulating hydraulic pump 1 and a motor 2. The one-way valve has a spring inside. When the pressure of the circulating system is too high, the hydraulic medium returns to the oil tank 63 through the one-way valve to protect the system and components. The circulating filter 57 is used to clean the hydraulic medium and prevent contaminants from entering the system. The cooler 58 is used to cool the hydraulic medium.

[0046] refer to Figure 5 As an implementation mode, the oil tank 63 is also provided with an air filter 59, a liquid level relay 60, a temperature sensor 61, a heater 62, and an oil drain ball valve 64. The air filter 59 filters pollutants in the air. The liquid level relay 60 measures the position of the hydraulic medium in the oil tank 63 and transmits the signal to the control system, so that the medium position in the oil tank 63 can be remotely monitored. The temperature sensor 61 measures the temperature of the hydraulic medium in the oil tank 63 and transmits the signal to the control system, so that the medium temperature in the oil tank 63 can be remotely monitored. The heater 62 is used for heating the hydraulic medium. The oil drain ball valve 64 is used to discharge the hydraulic medium when cleaning the oil tank 63.

[0047] refer to Figure 5As an implementation mode, the number of the swing hydraulic cylinders 72 is set to 8, that is, an 8-channel propeller blade electro-hydraulic servo loading simulation device, the oil outlet end of the total oil inlet pipeline is respectively connected to the third ball valve 12, the fourth ball valve 17, the fifth ball valve 22, the sixth ball valve 27, the seventh ball valve 32, the eighth ball valve 37, the ninth ball valve 42 and the tenth ball valve 47, the third ball valve 12 is connected to the oil inlet of the first swing hydraulic cylinder 15 through the first servo valve 13 and the first safety protection module 14, and the oil return port of the first swing hydraulic cylinder 15 is connected to the total oil return pipeline through the first servo valve 13 and the eleventh ball valve 16 in sequence;

[0048] The fourth ball valve 17 is connected to the oil inlet of the second swing hydraulic cylinder 20 through the second servo valve 18 and the second safety protection module 19, and the oil return port of the second swing hydraulic cylinder 20 is connected to the main oil return pipeline through the second servo valve 18 and the twelfth ball valve 21 in sequence;

[0049] The fifth ball valve 22 is connected to the oil inlet of the third swing hydraulic cylinder 25 through the third servo valve 23 and the third safety protection module 24, and the oil return port of the third swing hydraulic cylinder 25 is connected to the main oil return pipeline through the third servo valve 23 and the thirteenth ball valve 26 in sequence;

[0050] The sixth ball valve 27 is connected to the oil inlet of the fourth swing hydraulic cylinder 30 through the fourth servo valve 28 and the fourth safety protection module 29, and the oil return port of the fourth swing hydraulic cylinder 30 is connected to the main oil return pipeline through the fourth servo valve 28 and the fourteenth ball valve 31 in sequence;

[0051] The seventh ball valve 32 is connected to the oil inlet of the fifth swing hydraulic cylinder 35 through the fifth servo valve 33 and the fifth safety protection module 34, and the oil return port of the fifth swing hydraulic cylinder 35 is connected to the main oil return pipeline through the fifth servo valve 33 and the fifteenth ball valve 36 in sequence;

[0052] The eighth ball valve 37 is connected to the oil inlet of the sixth swing hydraulic cylinder 40 through the sixth servo valve 38 and the sixth safety protection module 39, and the oil return port of the sixth swing hydraulic cylinder 40 is connected to the main oil return pipeline through the sixth servo valve 38 and the sixteenth ball valve 41 in sequence;

[0053] The ninth ball valve 42 is connected to the oil inlet of the seventh swing hydraulic cylinder 45 through the seventh servo valve 43 and the seventh safety protection module 44, and the oil return port of the seventh swing hydraulic cylinder 45 is connected to the main oil return pipeline through the seventh servo valve 43 and the seventeenth ball valve 46 in sequence;

[0054] The tenth ball valve 47 is connected to the oil inlet of the eighth swing hydraulic cylinder 50 through the eighth servo valve 48 and the eighth safety protection module 49 , and the oil return port of the eighth swing hydraulic cylinder 50 is connected to the main oil return pipeline through the eighth servo valve 48 and the eighteenth ball valve 51 in turn.

[0055] The servo valve is mainly used to control the rotational motion of the loading swing cylinder. The safety protection module has the function of communicating the two chambers of the loading actuator. When there is an unexpected power outage or abnormal situation, the solenoid valve is powered off, and the two chambers of the loading actuator are communicated, which plays a role in buffering and protecting the test piece. The throttle valve is used to adjust the damping of the two chambers, and cooperates with the servo valve to better control the loading actuator.

[0056] It should be noted that six swing hydraulic cylinders may be provided, and the number of corresponding servo valves, ball valves and safety protection modules may also be adaptively adjusted.

[0057] refer to Figure 2-Figure 4 As an implementation method, the propeller root simulation part 66 is a metal part, which can better simulate the force of the propeller under normal working conditions.

[0058] refer to Figure 2-Figure 4 In a preferred embodiment, the number of propeller root simulation parts 66 is six or eight, which can be compatible with 6-channel and 8-channel propeller blade electro-hydraulic servo loading simulation devices, and can realize dynamic loading and monitoring of propeller blades.

[0059] refer to Figure 2-Figure 4 As an implementation mode, the blade root simulation member 66 is connected to the coupling 68 via a flat key, thereby transmitting the torque applied to the blade root simulation member 66 .

[0060] Adaptive changes made according to actual needs are all within the protection scope of the present invention.

[0061] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A propeller blade electro-hydraulic servo loading simulation device, characterized in that: It includes a propeller hub or a propeller pitch changing device, a blade root simulation part arranged in the circumferential direction of the propeller hub or the propeller pitch changing device, a loading device connected to the propeller hub or the propeller pitch changing device through the blade root simulation part, a loading control system for controlling the coordinated loading of the loading device, a loading hydraulic system for providing an oil source for the loading device, and a simulation system for establishing a propeller load model, wherein the simulation system is electrically connected to the loading control system, and the loading control system is electrically connected to the loading hydraulic system.

2. The propeller blade electro-hydraulic servo loading simulation device according to claim 1, characterized in that: The loading device includes a coupling connected to the propeller root simulation component, a swing hydraulic cylinder connected to the coupling through a torque sensor, a hydraulic cylinder support plate for supporting the swing hydraulic cylinder, and a protection module servo valve and encoder arranged on the swing hydraulic cylinder.

3. The propeller blade electro-hydraulic servo loading simulation device according to claim 1, characterized in that: The loading control system includes a host computer, a SpeedGoat high-performance real-time simulation target machine, and supporting components such as a programmable power supply and a signal junction box.

4. The propeller blade electro-hydraulic servo loading simulation device according to claim 1, characterized in that: The loading hydraulic system includes an oil tank, a hydraulic pump connected to the oil tank, and an electric motor providing power to the hydraulic pump, one end of the hydraulic pump is connected to the oil tank through a pipeline, and the other end of the hydraulic pump is respectively connected to a main pipeline, a first branch pipeline, and a second branch pipeline through a first one-way valve; The first branch pipeline is connected to the oil tank through an electromagnetic overflow valve and a proportional regulating valve respectively; The second branch pipeline is respectively connected to a pressure sensor, a first pressure gauge and an accumulator; The main pipeline is connected to the main oil inlet pipeline in a direction away from the first one-way valve through the first pipeline filter, the second pipeline filter and the first ball valve in sequence; The oil outlet end of the total oil inlet pipeline is connected to the oil inlet of the swing hydraulic cylinder, the oil return port of the swing hydraulic cylinder is connected to the total oil return pipeline, and the total oil return pipeline is connected to the oil tank through the second ball valve and the oil return filter in sequence; The oil tank is also connected to a second one-way valve, which is connected to a circulation pump group and a circulation filter respectively through a second pressure gauge on a pipeline away from the oil tank. The circulation pump group is connected to the oil tank, and the circulation filter is connected to the oil tank through a cooler.

5. The propeller propeller hydraulic electro-hydraulic servo loading simulation device according to claim 1, characterized in that: The oil tank is also provided with an air filter, a liquid level relay, a temperature sensor, a heater and an oil drain ball valve.

6. The propeller propeller hydraulic electro-hydraulic servo loading simulation device according to claim 1, characterized in that: The number of the swing hydraulic cylinders is 8, and the oil outlet end of the total oil inlet pipeline is respectively connected to the third ball valve, the fourth ball valve, the fifth ball valve, the sixth ball valve, the seventh ball valve, the eighth ball valve, the ninth ball valve and the tenth ball valve, the third ball valve is connected to the oil inlet of the first swing hydraulic cylinder through the first servo valve and the first safety protection module, and the oil return port of the first swing hydraulic cylinder is connected to the total oil return pipeline through the first servo valve and the eleventh ball valve in sequence; The fourth ball valve is connected to the oil inlet of the second swing hydraulic cylinder through the second servo valve and the second safety protection module, and the oil return port of the second swing hydraulic cylinder is connected to the main oil return pipeline through the second servo valve and the twelfth ball valve in sequence; The fifth ball valve is connected to the oil inlet of the third swing hydraulic cylinder through the third servo valve and the third safety protection module, and the oil return port of the third swing hydraulic cylinder is connected to the main oil return pipeline through the third servo valve and the thirteenth ball valve in sequence; The sixth ball valve is connected to the oil inlet of the fourth swing hydraulic cylinder through the fourth servo valve and the fourth safety protection module, and the oil return port of the fourth swing hydraulic cylinder is connected to the main oil return pipeline through the fourth servo valve and the fourteenth ball valve in sequence; The seventh ball valve is connected to the oil inlet of the fifth swing hydraulic cylinder through the fifth servo valve and the fifth safety protection module, and the oil return port of the fifth swing hydraulic cylinder is connected to the main oil return pipeline through the fifth servo valve and the fifteenth ball valve in sequence; The eighth ball valve is connected to the oil inlet of the sixth swing hydraulic cylinder through the sixth servo valve and the sixth safety protection module, and the oil return port of the sixth swing hydraulic cylinder is connected to the main oil return pipeline through the sixth servo valve and the sixteenth ball valve in sequence; The ninth ball valve is connected to the oil inlet of the seventh swing hydraulic cylinder through the seventh servo valve and the seventh safety protection module, and the oil return port of the seventh swing hydraulic cylinder is connected to the main oil return pipeline through the seventh servo valve and the seventeenth ball valve in sequence; The tenth ball valve is connected to the oil inlet of the eighth swing hydraulic cylinder through the eighth servo valve and the eighth safety protection module, and the oil return port of the eighth swing hydraulic cylinder is connected to the main oil return pipeline through the eighth servo valve and the eighteenth ball valve in turn.

7. The propeller hydraulic electro-hydraulic servo loading simulation device according to claim 1, characterized in that: The propeller root simulation part is a metal part.

8. The propeller hydraulic electro-hydraulic servo loading simulation device according to claim 1, characterized in that: The number of the blade root simulation parts is six or eight.

9. The propeller propeller hydraulic electro-hydraulic servo loading simulation device according to claim 2, characterized in that: The blade root simulation component is connected to the coupling via a flat key.

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