Automatic testing device for electric steering engine

Abstract

The utility model discloses an automatic testing device for an electric steering engine. The automatic testing device comprises a control cabinet and a load table, the load table comprises a table body, and a main shaft fixing support and a spring rod fixing support are arranged at the two ends of the table body respectively. One end of the spring rod is fixed on the spring rod fixing bracket, and the other end is connected with the main shaft through the connecting flange and the torque sensor; the main shaft is fixed on the main shaft fixing bracket; the main shaft is also sleeved with a photoelectric encoder; the control cabinet comprises an industrial personal computer, a power supply, a steering engine tester and a display which are arranged in a cabinet, the industrial personal computer is connected with the steering engine controller through a serial port cable, the steering engine tester is respectively connected with the torque sensor and the photoelectric encoder through communication cables, and the industrial personal computer is also respectively connected with the steering engine tester and the display. According to the utility model, rapid clamping of the steering engine and rapid switching of different torque loads can be realized, and the reliability of the steering engine test and the efficiency of the test work are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric steering gear load testing and relates to an automatic testing device for an electric steering gear. Background Art

[0002] The electric servo is the actuator in the flight control system of the guided rocket. When the rocket is flying in the air, it is affected by factors such as air resistance and wind speed. The changes in the flight attitude, position and angle need to be controlled by the servo. The performance of the servo in this state directly affects the flight performance of the guided rocket. In order to detect the performance of the servo in the flight state, flight tests or wind tunnel tests are traditionally used. However, this method is not easy to use in large quantities in actual use due to the use scenarios, economic costs, and the complexity of organizing experiments. At this time, a device for testing the performance of the servo under load is particularly important.

[0003] The existing electric servo load test device requires specialized operation by professionals, has high cost, cumbersome operation process, low automation, low product testing efficiency, and is difficult to meet the needs of large-scale testing and production. Summary of the invention

[0004] The technical problem solved by the utility model is to provide an automatic testing device for an electric servo, which can realize the fixation of the electric servo and the rapid switching of the torque load, thereby improving the testing efficiency of the load testing equipment.

[0005] The utility model is realized by the following technical solutions:

[0006] An automatic test device for an electric steering gear comprises a control cabinet and a load platform;

[0007] The load platform includes a platform body, and a spindle fixing bracket and a spring rod fixing bracket are respectively provided at two ends thereof; one end of the spring rod is fixed to the spring rod fixing bracket, and the other end is connected to the spindle through a connecting flange and a torque sensor; the spindle is fixed to the spindle fixing bracket, and a photoelectric encoder is also sleeved on the spindle;

[0008] The control cabinet includes an industrial computer, a power supply, a steering gear tester and a display arranged in the cabinet, wherein the industrial computer is connected to the steering gear controller through a serial cable, the steering gear tester is respectively connected to the torque sensor and the photoelectric encoder through communication cables, and the industrial computer is also respectively connected to the steering gear tester and the display.

[0009] The main shaft is provided with a keyway, the electric servo is fixed on the main shaft fixing bracket, and the output shaft of the electric servo is connected with the main shaft key;

[0010] A controller fixing bracket is provided beside the main shaft fixing bracket, and the steering gear controller is placed on the controller fixing bracket and fixed.

[0011] The electric steering gear is fixedly connected to the main shaft bracket through a screw rod and a locking nut.

[0012] The spring rod is sleeved on the spring rod bracket and is locked by the spring rod bracket cover plate;

[0013] The effective length of the spring rod is adjusted by adjusting the distance between the spring rod bracket and the spindle fixing bracket.

[0014] The spring rod moves with the main shaft, and the reaction torque generated simulates the rudder deflection hinge torque;

[0015] Open the spring rod bracket cover, move the spring rod bracket, adjust the effective length of the spring rod, and realize the switching of the load torque.

[0016] The industrial computer sends an action control instruction to the controller of the electric servo, and the electric servo performs the corresponding action; the torque sensor sends the collected torque signal and the photoelectric encoder sends the collected deflection angle signal to the servo tester respectively, and the output torque and angle value of the servo are measured in real time;

[0017] The industrial computer stores and processes the measurement results and sends the processed results to the display for display.

[0018] The cabinet is also provided with a printer and a keyboard respectively connected to the industrial computer, wherein the printer is located above the display and the keyboard is located below the display.

[0019] The platform body and the bottom of the cabinet are both provided with pulleys.

[0020] The load platform is also provided with a protective cover covering the main shaft fixing bracket and the spring rod bracket.

[0021] Compared with the prior art, the utility model has the following beneficial technical effects:

[0022] The electric servo automatic testing device provided by the utility model simulates the load by passively loading the spring rod. Compared with the traditional loading method, this loading method has much lower cost. Moreover, the effective length of the spring rod can be changed by adjusting the fixed position of the spring rod bracket, thereby realizing rapid switching of the load torque.

[0023] The electric steering gear automatic testing device provided by the utility model can assist in fixing the steering gear controller through keyways, screw rods, locking nuts and a controller fixing bracket, so as to realize rapid clamping of the electric steering gear; control instructions can be sent through an industrial computer, and the steering gear angular displacement signal can be collected in real time; the force exerted on the electric steering gear is detected by a torque sensor, so as to improve the reliability of the steering gear test and the efficiency of the test work. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1This is one of the schematic diagrams of the load platform structure of the utility model;

[0025] Figure 2 This is the second schematic diagram of the load platform structure of the utility model;

[0026] Figure 3 This is a schematic diagram of the control cabinet structure of the utility model.

[0027] Among them, 1 is a spring rod fixing bracket, 2 is a spring rod, 3 is a connecting flange, 4 is a torque sensor, 5 is a photoelectric encoder, 6 is a main shaft fixing bracket, 7 is a controller fixing bracket, 8 is a platform, and 9 is a main shaft;

[0028] 31 is a cabinet, 32 is an industrial computer, 33 is a power supply, 34 is a servo tester, 35 is a display screen, 36 is a printer, 37 is a keyboard, and 38 is a pulley. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings, which are intended to explain the present invention rather than to limit it.

[0030] See also Figure 1-Figure 3 , an automatic test device for an electric servo, comprising a control cabinet and a load platform;

[0031] The load platform includes a platform body 8, and a spindle fixing bracket 6 and a spring rod fixing bracket 1 are respectively provided at two ends thereof; one end of the spring rod 2 is fixed to the spring rod fixing bracket 1, and the other end is connected to the spindle through a connecting flange 3 and a torque sensor 4; the spindle is fixed to the spindle fixing bracket 6, and a photoelectric encoder 5 is also provided on the spindle;

[0032] The control cabinet includes an industrial computer 32, a power supply 33, a servo tester 34 and a display 35 arranged in a cabinet 31, wherein the industrial computer 32 is connected to the servo controller via a serial cable, the servo tester 34 is respectively connected to the torque sensor 4 and the photoelectric encoder 5 via communication cables, and the industrial computer 32 is also respectively connected to the servo tester 34 and the display 35.

[0033] The load table follows the movement of the rudder shaft through a spring rod, and the reaction torque generated is used to simulate the rudder deflection hinge torque. The output shaft of the servo is connected to one end of the spring rod (elastic material), and the other end of the spring rod is fixed. In this way, when the servo moves, the spring rod will give the rudder shaft a reaction force, thereby achieving the role of simulating the load. This type of loading is passively generated by the spring rod driven by the movement of the servo, so it is called passive loading. When loading passively, the stiffness (gradient) of the elastic material needs to be calibrated before the experiment to match the gradient of the experimental servo. Although once the gradient is set, it cannot be changed during the working process, so there are certain limitations in its use; but the method is a more traditional loading method, and the equipment cost is much smaller than active loading.

[0034] The industrial computer sends a series of control instructions to the electric servo controller, collects data, stores and processes the feedback signals in real time, and displays the processing results.

[0035] The connection between the control cabinet and the load platform can use the Y50 series aviation plug to avoid human insertion errors and ensure correct and reliable connection.

[0036] Furthermore, a keyway is provided on the main shaft, the electric servo is fixed on the main shaft fixing bracket 6, and the output shaft of the electric servo is connected with the main shaft key;

[0037] A controller fixing bracket 7 is provided beside the main shaft fixing bracket 6 , and the steering gear controller is placed on the controller fixing bracket 7 and fixed.

[0038] The electric servo is fixedly connected to the main shaft bracket through a screw and a locking nut. The controller fixing bracket can assist in fixing the servo controller, thereby realizing rapid clamping of the electric servo.

[0039] Furthermore, the spring rod 2 is sleeved on the spring rod bracket and locked by the spring rod bracket cover; the effective length of the spring rod is adjusted by adjusting the distance between the spring rod bracket and the main shaft fixing bracket.

[0040] Specifically, the spring rod moves with the main shaft, and the reaction torque generated simulates the rudder deflection hinge torque;

[0041] Open the spring rod bracket cover, move the spring rod bracket, adjust the effective length of the spring rod, and realize the switching of the load torque.

[0042] Furthermore, the industrial computer sends an action control instruction to the controller of the electric servo, and the electric servo performs a corresponding action; the torque sensor sends the collected torque signal and the photoelectric encoder sends the collected deflection angle signal to the servo tester, respectively, to measure the output torque and angle value of the servo in real time;

[0043] The industrial computer stores and processes the measurement results and sends the processed results to the display for display.

[0044] Specifically, the cabinet is also equipped with a printer and a keyboard respectively connected to the industrial computer, wherein the printer is located above the display and the keyboard is located below the display; to facilitate the test operation and the generation of the test report;

[0045] Specifically, the platform body and the bottom of the cabinet are provided with pulleys to facilitate the movement of the test device; and the load platform is also provided with a protective cover covering the spindle fixing bracket and the spring rod bracket to provide necessary protection.

[0046] During the test, install the electric servo to be tested on the main shaft fixing bracket of the load platform, quickly lock the electric servo, connect the power cord and control cable, and adjust the effective length of the spring torsion bar according to the actual load conditions;

[0047] After the test system is debugged, turn on the power switch, display switch, and tester switch in sequence. After the torque data is displayed normally, you can turn on the industrial computer for testing.

[0048] The servo takes action after receiving the command, and the real-time measurement of the servo output torque and angle value is achieved through the torque sensor and photoelectric encoder.

[0049] The test results can be output in images or paper form via display screens and printers.

[0050] The utility model can send control instructions through an industrial computer and collect angular displacement signals of the steering gear in real time. The force exerted on the electric steering gear is detected by a torque sensor, thereby improving the reliability of the steering gear test and the efficiency of the test work.

[0051] The above embodiments are preferred examples for implementing the present invention, and the present invention is not limited to the above embodiments. Any non-essential additions and substitutions made by those skilled in the art based on the technical features of the present invention are within the protection scope of the present invention.

Claims

1. An automatic test device for an electric steering gear, characterized in that: Includes control cabinet and load platform; The load platform includes a platform body, and a spindle fixing bracket and a spring rod fixing bracket are respectively provided at two ends thereof; one end of the spring rod is fixed to the spring rod fixing bracket, and the other end is connected to the spindle through a connecting flange and a torque sensor; the spindle is fixed to the spindle fixing bracket, and a photoelectric encoder is also sleeved on the spindle; The control cabinet includes an industrial computer, a power supply, a steering gear tester and a display arranged in the cabinet, wherein the industrial computer is connected to the steering gear controller through a serial cable, the steering gear tester is respectively connected to the torque sensor and the photoelectric encoder through communication cables, and the industrial computer is also respectively connected to the steering gear tester and the display.

2. The electric steering gear automatic test device according to claim 1, characterized in that: The main shaft is provided with a keyway, the electric servo is fixed on the main shaft fixing bracket, and the output shaft of the electric servo is connected with the main shaft key; A controller fixing bracket is provided beside the main shaft fixing bracket, and the steering gear controller is placed on the controller fixing bracket and fixed.

3. The electric steering gear automatic test device according to claim 2, characterized in that: The electric steering gear is fixedly connected to the main shaft bracket through a screw rod and a locking nut.

4. The electric steering gear automatic test device according to claim 1 or 2, characterized in that: The spring rod is sleeved on the spring rod bracket and is locked by the spring rod bracket cover plate; The effective length of the spring rod is adjusted by adjusting the distance between the spring rod bracket and the spindle fixing bracket.

5. The electric steering gear automatic test device according to claim 4, characterized in that: The spring rod moves with the main shaft, and the reaction torque generated simulates the rudder deflection hinge torque; Open the spring rod bracket cover, move the spring rod bracket, adjust the effective length of the spring rod, and realize the switching of the load torque.

6. The electric steering gear automatic test device according to claim 1, characterized in that: The industrial computer sends an action control instruction to the controller of the electric servo, and the electric servo performs the corresponding action; the torque sensor sends the collected torque signal and the photoelectric encoder sends the collected deflection angle signal to the servo tester respectively, and the output torque and angle value of the servo are measured in real time; The industrial computer stores and processes the measurement results and sends the processed results to the display for display.

7. The electric steering gear automatic test device according to claim 1 or 6, characterized in that: The cabinet is also provided with a printer and a keyboard respectively connected to the industrial computer, wherein the printer is located above the display and the keyboard is located below the display.

8. The electric steering gear automatic test device according to claim 1, characterized in that: Pulleys are arranged at the bottom of the table body and the cabinet.

9. The electric steering gear automatic test device according to claim 1, characterized in that: The load platform is also provided with a protective cover covering the main shaft fixing bracket and the spring rod bracket.

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