Operating rod testing device

Abstract

The invention relates to the field of control lever testing, in particular to a device for testing the pulling angle, the control force and the service life of a control lever, and particularly relates to a control lever testing device which comprises a bottom plate, and a first support used for being fixedly connected with a control base on the control lever is fixedly arranged on the bottom plate. A second support is further fixedly arranged on the bottom plate, a driving device is fixedly arranged on the second support, the driving device is fixedly connected with a swing arm through a speed reducer, and the swing arm is vertically arranged; one end of the rotary frame is fixedly connected with the swing arm, the other end of the rotary frame extends to the position above the first support, and the end, located above the first support, of the rotary frame is connected with a pull pressure sensor through a knuckle bearing. According to the invention, the wrenching angle, the wrenching direction and the wrenching speed of the operating lever can be accurately controlled by utilizing the servo motor. The torque is increased by using the speed reducer, and the test device can adapt to the test of the operating lever with larger pulling force.

Description

Technical Field

[0001] The present invention relates to the field of testing of joysticks, and specifically to a device for testing the pulling angle, operating force, and service life of a joystick, and more particularly to a joystick testing device. Background Art

[0002] Joysticks are widely used in the fields of aviation, shipbuilding, and automation. They can convert the operation signals of operators into electrical signals and achieve the operation of controlled components. They have the characteristics of compact structure, rapid response, high output precision, output diversity, and strong anti-interference ability. They are widely used in controlling aerospace equipment, ships, automation equipment, unmanned aerial vehicles, and equipment working in high-risk environments where operators cannot reach.

[0003] In recent years, with the vigorous development of automation control technology, the fly-by-wire technology of joysticks has become increasingly mature, and its response speed and reliability have been further improved. It has also been widely extended to the military, aerospace, and other fields. When applied in the aerospace field, due to the high requirements for pulling angle, operating force, service life, etc., and since there is no such testing equipment on the current market, it is necessary to invent a testing device for its pulling angle, operating force, and service life. Summary of the Invention

[0004] The purpose of the present invention is to provide a joystick testing device for the pulling angle, operating force, and service life of a joystick, so as to solve the problems raised in the above background art.

[0005] A joystick testing device of the present invention includes a bottom plate. A first bracket for fixedly connecting the operating base on the joystick is fixedly arranged on the bottom plate. A second bracket is also fixedly arranged on the bottom plate. A driving device is fixedly arranged on the second bracket. The driving device is fixedly connected with a swing arm through a speed reducer, and the swing arm is arranged vertically. It further includes a rotary frame with one end fixedly connected to the swing arm and the other end extending above the first bracket. A pull-pressure sensor is connected to the end of the rotary frame located above the first bracket through a spherical bearing. A clamp for connecting the joystick handle on the joystick is connected to the pull-pressure sensor. The end of the rotary frame connected to the swing arm is fixedly connected to the swing arm through a height adjustment structure.

[0006] Preferably, the height adjustment structure includes an installation groove arranged vertically on the swing arm. A transfer plate is fixedly connected to the end of the rotary frame connected to the swing arm. The transfer plate is attached to the swing arm, and the transfer plate is fixedly connected to the swing arm through a bolt passing through the transfer plate and the installation groove. The width of the installation groove is smaller than the outer diameter of the nut connected to the bolt connecting the transfer plate and the swing arm.

[0007] Preferably, the driving device is a servo motor. The servo motor is connected to an output shaft through a speed reducer. The output shaft is horizontally arranged. After passing through the second bracket, the output shaft is fixedly connected to one end of the swing arm. The output shaft is rotatably connected to the second bracket through a bushing.

[0008] Preferably, the first bracket includes two vertical and parallel vertical plates. At the top of the two bottom plates, a ring-shaped top plate is fixedly connected through fastening bolts. On the ring-shaped top plate, connection holes for connecting the control bases on the control lever are evenly distributed along the circumference of the ring-shaped top plate.

[0009] Preferably, the second bracket includes a vertical end plate and a small bottom plate connected to the bottom plate through fastening bolts. The end plate is arranged on the bottom plate on one side of the small bottom plate, and the end plate is fixedly connected to the small bottom plate through a plurality of fixedly connected rib plates; The slewing frame and the driving device are respectively located on both sides of the end plate.

[0010] Preferably, the fixture includes a left fixture body and a right fixture body. On the opposite surfaces of the left fixture body and the right fixture body, there are limit grooves for limiting the control lever handle on the control lever. The left fixture body and the right fixture body are connected by two screws that pass through the left fixture body and are threadedly connected to the right fixture body. The limit grooves are located in the area between the two screws; The tensile and compressive force sensor is connected to the left fixture body or the right fixture body.

[0011] The present invention is driven by a high-precision servo motor. After the torque is amplified by the speed reducer, it can adapt to large-torque tests. Combining with the test process of the product, the response data is processed and saved. It has the following characteristics: The present invention can accurately control the pulling angle, pulling direction, and pulling speed of the control lever by using a servo motor.

[0012] The present invention uses a speed reducer to increase the torque and can adapt to the tests of control levers with greater pulling forces.

[0013] The present invention is provided with a high-precision tensile and compressive force sensor, which is directly connected to the control lever, improving the test accuracy of the pulling force.

[0014] The present invention can accurately control the swing arm angle by a servo motor and can adapt to the tests of control levers with different pulling angles.

[0015] The present invention can adapt to the tests of control levers with different operating heights and positions by adjusting the heights of the slewing frame and the adapter plate.

[0016] High-strength aluminum alloy is adopted for the materials of each structural member of the present invention, and the overall structural design is lightweight.

[0017] The present invention is more compact and small in size, facilitating handling and transfer. Brief Description of the Drawings

[0018] Figure 1 This is a schematic structural diagram of the present invention.

[0019] Figure 2 This is a schematic diagram after a joystick is installed to the present invention.

[0020] Figure 3 This is a schematic diagram after another joystick is installed to the present invention.

[0021] Reference numerals: 1 - bottom plate, 2 - vertical plate, 3 - top plate, 4 - tension and compression sensor, 5 - spherical plain bearing, 6 - slewing frame, 7 - adapter plate, 8 - swing arm, 9 - bushing, 10 - reducer, 11 - servo motor, 12 - end plate, 13 - rib plate, 14 - small bottom plate. Detailed implementation manners

[0022] A joystick testing device of the present invention includes a bottom plate. A first bracket for fixedly connecting a joystick base on the joystick is fixedly arranged on the bottom plate. A second bracket is also fixedly arranged on the bottom plate. A driving device is fixedly arranged on the second bracket. The driving device is fixedly connected with a swing arm through a speed reducer, and the swing arm is arranged vertically; It further includes a slewing frame with one end fixedly connected to the swing arm and the other end extending above the first bracket. A tension and compression sensor is connected to the end of the slewing frame located above the first bracket through a spherical plain bearing. A fixture for connecting a joystick handle on the joystick is connected to the tension and compression sensor; The end of the slewing frame connecting the swing arm is fixedly connected to the swing arm through a height adjustment structure.

[0023] During use, the fixed connection of the joystick is realized by using the first bracket, and the tension and compression sensor is connected to the joystick handle on the joystick through the fixture. The driving device drives the swing arm to act as required, thereby driving the action of the joystick to realize the test of the joystick.

[0024] In one embodiment, the height adjustment structure includes an installation groove arranged on the swing arm in the vertical direction. A transfer plate is fixedly connected to the end of the slewing frame connecting the swing arm. The transfer plate is attached to the swing arm, and the transfer plate is fixedly connected to the swing arm through a bolt passing through the transfer plate and the installation groove; The width of the installation groove is smaller than the outer diameter of the nut connected to the bolt connecting the transfer plate and the swing arm.

[0025] The height adjustment of the slewing frame is realized by adjusting the installation position of the transfer plate on the swing arm according to the structure of the joystick.

[0026] In one embodiment, the driving device is a servo motor. The servo motor is connected with an output shaft through a speed reducer. The output shaft is arranged horizontally. The output shaft passes through the second bracket and is fixedly connected to one end of the swing arm; The output shaft is rotatably connected to the second bracket through a bushing.

[0027] In one embodiment, the first bracket includes two vertical and parallel standing plates. The tops of the two bottom plates are fixedly connected with an annular top plate through fastening bolts. The annular top plate is circumferentially provided with connection holes for connecting the operating bases on the operating levers along the circumference of the annular top plate.

[0028] In one embodiment, the second bracket includes a vertical end plate and a small bottom plate connected to the bottom plate through fastening bolts. The end plate is arranged on the bottom plate on one side of the small bottom plate, and the end plate is fixedly connected to the small bottom plate through a plurality of fixedly connected rib plates; The slewing frame and the driving device are respectively located on both sides of the end plate.

[0029] In one embodiment, the fixture includes a left fixture body and a right fixture body. Limiting grooves for limiting the operating lever handle on the operating lever are arranged on the opposite surfaces of the left fixture body and the right fixture body. The left fixture body and the right fixture body are connected by two screws that pass through the left fixture body and are threadedly connected to the right fixture body. The limiting grooves are located in the area between the two screws; The tensile and compressive force sensor is connected to the left fixture body or the right fixture body.

[0030] Next, the present invention will be described clearly and completely in conjunction with the attached Figures 1-3 , it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0031] The driving mode of the servo motor is torque drive, and at the same time, the rotation angle of the servo motor is set according to the designed angle of the operating lever. Different operating levers are connected to the test device by setting a transfer tooling, and it is necessary to ensure that the servo motor, the reducer, and the pivoting hinge point of the operating lever are coaxially installed; by adjusting the heights of the slewing frame and the transfer plate, it is adapted to the testing of operating levers with different operating heights and positions; the fixture of the operating lever is set to be connected to the tensile and compressive force sensor. The industrial control computer is connected to the servo motor.

[0032] During the pivoting test, because the servo motor is equipped with an encoder, the pivoting angle, pivoting direction, and pivoting speed of the operating lever can be detected and collected in real time; at the same time, since the servo motor uses torque drive, when the operating lever fails or is damaged and cannot be pivoted, the industrial control computer can alarm in time and identify the cause of the failure; by collecting the data of the tensile and compressive force sensor in real time, the change curve of the pivoting force of the operating lever during the short-term test or the life test can be detected and obtained in real time; the controller can obtain the test times of the angle sensor by collecting data such as the pulses of the motor driver.

Claims

1. A joystick testing device, comprising a base plate, on which a first bracket for fixing and connecting a joystick control base is fixedly arranged, characterized in that: A second bracket is also fixedly arranged on the bottom plate, a driving device is fixedly arranged on the second bracket, the driving device is fixedly connected to a swing arm via a reducer, and the swing arm is vertically arranged; It also includes a rotating frame with one end fixedly connected to the swing arm and the other end extending to the top of the first bracket, the rotating frame is located on the top of the first bracket. A tension and pressure sensor is connected to the tension and pressure sensor through a joint bearing, and a clamp for connecting the joystick handle on the joystick is connected to the joystick; One end of the rotating frame connected to the swing arm is fixedly connected to the swing arm through a height adjustment structure.

2. A joystick testing device as claimed in claim 1, characterized in that: The height adjustment structure includes a mounting groove arranged on the swing arm along the vertical direction, an adapter plate is fixedly connected to one end of the rotating frame connected to the swing arm, the adapter plate is fitted on the swing arm, and the adapter plate is fixedly connected to the swing arm by bolts passing through the adapter plate and the mounting groove; The width of the mounting groove is smaller than the outer diameter of the nut connected to the bolt connecting the adapter plate and the swing arm.

3. A joystick testing device as claimed in claim 1, characterized in that: The driving device is a servo motor, and the servo motor is connected to an output shaft through a reducer. The output shaft is horizontally arranged, and the output shaft passes through the second bracket and is fixedly connected to one end of the swing arm; The output shaft is rotatably connected to the second bracket via a shaft sleeve.

4. A joystick testing device as claimed in claim 1, characterized in that: The first bracket includes two vertically arranged and parallel vertical plates, the tops of the two bottom plates are fixedly connected with an annular top plate by fastening bolts, and the annular top plate is evenly distributed along the circumference of the annular top plate with connecting holes for connecting to the operating base on the operating rod.

5. A joystick testing device as claimed in claim 1, characterized in that: The second bracket includes a vertically arranged end plate and a small bottom plate connected to the bottom plate by fastening bolts, wherein the end plate is arranged on the bottom plate on one side of the small bottom plate, and the end plate is fixedly connected to the small bottom plate by a plurality of rib plates fixedly connected; The rotating frame and the driving device are respectively located on both sides of the end plate.

6. A joystick testing device as claimed in claim 1, characterized in that: The clamp comprises a left clamp body and a right clamp body, and a limiting groove for limiting the position of the joystick handle on the joystick is arranged on the opposite sides of the left clamp body and the right clamp body, and the left clamp body and the right clamp body are connected by two screws that penetrate the left clamp body and are connected to the right clamp body through threads, and the limiting groove is located in the area between the two screws; The pulling pressure sensor is connected to the left clamp body or the right clamp body.

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