Force feedback electro-hydraulic servo loading system

Abstract

The utility model discloses a force feedback electro-hydraulic servo loading system, and belongs to the technical field of aero-engine bearing testers. In order to improve the reliability of evaluating the bearing, the utility model comprises an upper computer connected with a PLC (Programmable Logic Controller), the PLC is respectively connected with a data storage module and a servo driver, the servo driver is connected with a servo electric cylinder, the servo electric cylinder is connected with a driving hydraulic cylinder, the driving hydraulic cylinder is connected with an execution hydraulic cylinder, a force sensor is arranged in the execution hydraulic cylinder, and the force sensor is connected with an isolation module. The isolation module is connected with the data storage module; the upper computer and the PLC form a control part of the force feedback electro-hydraulic servo loading system; the data storage module, the isolation module and the force sensor form an acquisition part of the force feedback electro-hydraulic servo loading system; the servo driver, the servo electric cylinder, the driving hydraulic cylinder and the execution hydraulic cylinder form a loading part of the force feedback electro-hydraulic servo loading system. The device can be controlled remotely.

Description

Technical Field

[0001] The utility model belongs to the technical field of aircraft engine bearing testers, and in particular relates to a force feedback electro-hydraulic servo loading system. Background Art

[0002] With the continuous development of aviation engineering technology, the performance requirements of aircraft engines are getting higher and higher. Among them, the main shaft bearing of the aircraft engine is an important part of the engine, and its operating condition has an important impact on the working efficiency, safety, and life of the engine. Therefore, in-depth research and exploration of the dynamic application technology of the main shaft bearing of the aircraft engine has extremely important practical significance and application value. The load distribution of the bearing directly affects the contact stress and lubrication condition between the rolling element and the ring, which determines the performance and life of the bearing. The flight state and attitude of the aircraft will cause the engine to have different degrees of overload, resulting in a certain additional inertial load on the main shaft bearing, and in some severe overload conditions, the additional load generated by this will even dominate. At the same time, the high-pressure shaft is generally connected to the additional casing through a pair of bevel gears, and the load generated by the meshing of the bevel gears will also act on the bearing on the high-pressure shaft.

[0003] The aircraft engine bearing test mainly simulates the rapid change of load on the bearing under the condition of large engine overload. The formal test load spectrum requires that the rapid change of load be completed in a short time, and the error between the actual change time and the required time is controlled within a very short time; the load holding time after the change is controllable, and the control error between the holding time and the required time is very small.

[0004] It is difficult for existing aviation spindle bearing testers to achieve stable operation and high precision after large overload and rapid load change. Summary of the invention

[0005] The utility model provides a force feedback electro-hydraulic servo loading system to improve the reliability of evaluating bearings.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0007] A force feedback electro-hydraulic servo loading system, comprising a driving hydraulic cylinder, an executing hydraulic cylinder, a host computer, a PLC, a data storage module, an isolation module, a force sensor, a servo electric cylinder, and a servo driver;

[0008] The host computer is connected to the PLC, the PLC is respectively connected to the data storage module and the servo driver, the servo driver is connected to the servo electric cylinder, the servo electric cylinder is connected to the driving hydraulic cylinder, the driving hydraulic cylinder is connected to the execution hydraulic cylinder, the execution hydraulic cylinder has a built-in force sensor, the force sensor is connected to the isolation module, and the isolation module is connected to the data storage module;

[0009] The host computer and PLC constitute the control part of a force feedback electro-hydraulic servo loading system;

[0010] The data storage module, isolation module and force sensor constitute a collection part of a force feedback electro-hydraulic servo loading system;

[0011] The servo driver, the servo electric cylinder, the driving hydraulic cylinder and the executing hydraulic cylinder constitute a loading part of a force feedback electro-hydraulic servo loading system.

[0012] Furthermore, the structure of the actuator hydraulic cylinder includes a quick-connect connector, an actuator cylinder body, a piston, a piston rod, a force sensor, a damper, a sliding bearing, an end flange, and a loading rod. A quick-connect connector is installed at the left end of the actuator cylinder body, a piston is installed in the actuator cylinder body, the piston is connected to the piston rod, the piston rod is connected to the force sensor, the force sensor is connected to the damper, the damper is connected to the loading rod, and an end flange is provided at the right end of the actuator hydraulic cylinder, and the loading rod is connected to the end flange through a sliding bearing.

[0013] Furthermore, the model of the driving hydraulic cylinder is KY40.

[0014] Furthermore, the model of the data storage module is GH90XA.

[0015] Furthermore, the model of the isolation module is HQ-504E.

[0016] Furthermore, the model of the servo electric cylinder is KY-DY.

[0017] Furthermore, the model of the servo driver is ASD-A2-0421-L.

[0018] The beneficial effects of the utility model are:

[0019] The force feedback electro-hydraulic servo loading system described in the utility model can be remotely controlled. The actual working conditions of the main shaft bearing of an aircraft engine are large load, high speed, high temperature, high pressure airflow, temperature field, etc. The present invention can be remotely controlled to escape from the harsh operating environment.

[0020] The utility model discloses a force feedback electro-hydraulic servo loading system, which adopts servo control, and the load accuracy can reach ±1% FS, and the loading rate variation can reach 1 kN / s. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a force feedback electro-hydraulic servo loading system described in the utility model;

[0022] Figure 2It is a structural schematic diagram of the execution hydraulic cylinder described in the utility model. DETAILED DESCRIPTION

[0023] Exemplary embodiments of the present invention will be described below in conjunction with the accompanying drawings. For the sake of clarity and conciseness, not all features of the actual implementation are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the process of developing any such actual implementation in order to achieve the specific goals of the developer, for example, to meet those constraints related to the system and business, and these constraints may vary from implementation to implementation. In addition, it should be understood that although the development work may be very complex and time-consuming, for those skilled in the art who benefit from the disclosure of the present utility model, such development work is merely a routine task.

[0024] It is also necessary to explain here that, in order to avoid obscuring the present invention due to unnecessary details, only the device structure and / or processing steps closely related to the scheme according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0025] In order to further understand the content, features and functions of the utility model, the following specific implementation methods are given as examples, and the attached Figure 1 and attached Figure 2 The detailed instructions are as follows: Specific implementation method one:

[0027] A force feedback electro-hydraulic servo loading system, comprising a driving hydraulic cylinder 1, an executing hydraulic cylinder 2, a host computer 3, a PLC 4, a data storage module 5, an isolation module 6, a force sensor 205, a servo electric cylinder 8, and a servo driver 7;

[0028] The host computer 3 is connected to the PLC 4, the PLC 4 is respectively connected to the data storage module 5 and the servo driver 7, the servo driver 7 is connected to the servo electric cylinder 8, the servo electric cylinder 8 is connected to the driving hydraulic cylinder 1, the driving hydraulic cylinder 1 is connected to the execution hydraulic cylinder 2, the execution hydraulic cylinder 2 has a built-in force sensor 205, the force sensor 205 is connected to the isolation module 6, and the isolation module 6 is connected to the data storage module 5;

[0029] The host computer 3 and PLC 4 constitute the control part of a force feedback electro-hydraulic servo loading system;

[0030] The data storage module 5, the isolation module 6, and the force sensor 205 constitute a collection part of a force feedback electro-hydraulic servo loading system;

[0031] The servo driver 7, the servo electric cylinder 8, the driving hydraulic cylinder 1 and the executing hydraulic cylinder 2 constitute a loading part of a force feedback electro-hydraulic servo loading system.

[0032] Furthermore, the structure of the actuator hydraulic cylinder 2 includes a quick-connect connector 201, an actuator cylinder body 202, a piston 203, a piston rod 204, a force sensor 205, a damper 206, a sliding bearing 207, an end flange 208, and a loading rod 209. The quick-connect connector 201 is installed at the left end of the actuator cylinder body 202, and a piston 203 is installed in the actuator cylinder body 202. The piston 203 is connected to the piston rod 204, and the piston rod 204 is connected to the force sensor 205. The force sensor 205 is connected to the damper 206, and the damper 206 is connected to the loading rod 209. The right end of the actuator hydraulic cylinder 2 is provided with an end flange 208, and the loading rod 209 is connected to the end flange 208 through the sliding bearing 207.

[0033] Furthermore, the model of the driving hydraulic cylinder 1 is KY40.

[0034] Furthermore, the model of the data storage module 5 is GH90XA.

[0035] Furthermore, the model of the isolation module 6 is HQ-504E.

[0036] Furthermore, the model of the servo electric cylinder 8 is KY-DY.

[0037] Furthermore, the model of the servo driver 7 is ASD-A2-0421-L.

[0038] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0039] Although the present application has been described above with reference to specific embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the various features in the specific embodiments disclosed in the present application may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A force feedback electro-hydraulic servo loading system, characterized in that: It includes a driving hydraulic cylinder (1), an executing hydraulic cylinder (2), a host computer (3), a PLC (4), a data storage module (5), an isolation module (6), a force sensor (205), a servo electric cylinder (8), and a servo driver (7); The host computer (3) is connected to a PLC (4), the PLC (4) is respectively connected to a data storage module (5) and a servo driver (7), the servo driver (7) is connected to a servo electric cylinder (8), the servo electric cylinder (8) is connected to a driving hydraulic cylinder (1), the driving hydraulic cylinder (1) is connected to an actuating hydraulic cylinder (2), the actuating hydraulic cylinder (2) has a built-in force sensor (205), the force sensor (205) is connected to an isolation module (6), and the isolation module (6) is connected to the data storage module (5); The host computer (3) and PLC (4) constitute a control part of a force feedback electro-hydraulic servo loading system; The data storage module (5), the isolation module (6), and the force sensor (205) constitute a collection part of a force feedback electro-hydraulic servo loading system; The servo driver (7), the servo electric cylinder (8), the driving hydraulic cylinder (1) and the executing hydraulic cylinder (2) constitute a loading part of a force feedback electro-hydraulic servo loading system.

2. A force feedback electro-hydraulic servo loading system according to claim 1, characterized in that: The structure of the actuator hydraulic cylinder (2) comprises a quick-connect joint (201), an actuator cylinder body (202), a piston (203), a piston rod (204), a force sensor (205), a damper (206), a sliding bearing (207), an end flange (208), and a loading rod (209). The left end of the actuator cylinder body (202) is provided with a quick-connect joint (201), a piston (203) is installed in the actuator cylinder body (202), the piston (203) is connected to the piston rod (204), the piston rod (204) is connected to the force sensor (205), the force sensor (205) is connected to the damper (206), the damper (206) is connected to the loading rod (209), and the right end of the actuator hydraulic cylinder (2) is provided with an end flange (208), and the loading rod (209) is connected to the end flange (208) via the sliding bearing (207).

3. A force feedback electro-hydraulic servo loading system according to claim 2, characterized in that: The model of the driving hydraulic cylinder (1) is KY40.

4. A force feedback electro-hydraulic servo loading system according to claim 3, characterized in that: The model of the data storage module (5) is GH90XA.

5. A force feedback electro-hydraulic servo loading system according to claim 4, characterized in that: The model of the isolation module (6) is HQ-504E.

6. A force feedback electro-hydraulic servo loading system according to claim 5, characterized in that: The model of the servo electric cylinder (8) is KY-DY.

7. A force feedback electro-hydraulic servo loading system according to claim 6, characterized in that: The model of the servo driver (7) is ASD-A2-0421-L.

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