Electric control handle comprehensive life test device

Abstract

The invention relates to the field of electric control handle testing, in particular to an electric control handle comprehensive service life testing device which comprises a working table, a product support used for installing an electric control handle is arranged on the working table, and the electric control handle comprehensive service life testing device is characterized in that the product support is connected with the working table through a rotating device; the workbench is further provided with a first driving device, the first driving device is connected with a transmission shaft through a first coupler, and the end, away from the first coupler, of the transmission shaft is connected with an expansion sleeve shaft through an expansion sleeve connected to the transmission shaft in a sleeving mode. According to the invention, the rotation of the product support provided with the electric control handle is realized by using the rotating device, the pressing of the microswitch at the top end of the electric control handle is realized by using the pressing device, the transmission shaft is driven to rotate by using the first driving device, and the driving lever is driven to realize the swinging of the electric control handle arranged on the product support, thereby realizing the testing of various indexes of the electric control handle; operation is simple, and the response speed is high.

Description

Technical Field

[0001] The present invention relates to the field of electric control handle testing, and in particular to a comprehensive life test device for electric control handles. Background Art

[0002] The electric control handle utilizes a high-reliability angular displacement sensor and utilizes ergonomic design principles to centralize various control functions within a single hand. It is widely used in moving vehicles such as aviation, aerospace, combat vehicles, and ships. The operator manually selects, locates, and tracks moving targets. The entire product consists of a joystick, main housing, potentiometer, microswitches, and electronic circuitry. Due to the unique operating conditions and environments of the electric control handle, high operational sensitivity and service life are required.

[0003] During the initial development phase of an electric control handle, the manufacturer needed to test the output parameters (current or voltage) and reliability of the product when the handle was rotated to various positions and when the joystick was swung to specific angles. To meet the manufacturer's various testing requirements for the electric control handle, equipment requirements were proposed.

[0004] Since the rotation angle and swing angle control accuracy required for the electric control handle test are relatively high, there is currently no corresponding test device on the market. Therefore, it is necessary to invent a comprehensive life test device for the joystick electric control handle. Summary of the Invention

[0005] In order to solve the above problems, the present invention provides a comprehensive life test device for an electric control handle which has a simple structure, stable operation and high integration.

[0006] The present invention provides a comprehensive life test device for an electric control handle, comprising a work surface, wherein a product bracket for mounting the electric control handle is provided on the work surface, and the product bracket is connected to the work surface via a rotating device; The workbench is also provided with a first driving device, which is connected to a transmission shaft through a first coupling, and the end of the transmission shaft away from the first coupling is connected to an expansion sleeve shaft through an expansion sleeve sleeved on the transmission shaft, and two parallel shift rods are fixedly connected to the expansion sleeve shaft, and the ends of the two shift rods away from the expansion sleeve shaft are fixedly connected by a bushing, and a through hole is provided on the bushing, and a third bearing is clamped in the through hole, and an inner nesting is provided in the inner ring of the third bearing for sleeved on the cylindrical surface of the upper end of the electric control handle; The workbench located on both sides of the shift rod is also provided with a first limit switch for preventing the electric control handle from swinging beyond a limited angle, and the first limit switch is electrically connected to the first drive device; The workbench is also provided with a pressing device for pressing the micro switch at the top end of the electric control handle.

[0007] Preferably, the pressing device includes a slide fixing plate and a second driving device, wherein the slide fixing plate is fixedly arranged on the end of the expansion sleeve shaft away from the transmission shaft, the slide fixing plate is arranged vertically toward the product support, and the ends of the two shifting rods away from the bushing are respectively fixedly connected to the corresponding two sides of the slide fixing plate; A slide rail is provided on the upper portion of the slide fixing plate facing the product support, a slide is provided on the slide rail, a screw is threadedly connected to the slide, and one end of the screw toward the lower portion of the slide fixing plate is connected to the second driving device through a second coupling, the second driving device is fixedly provided at the lower portion of the slide fixing plate, and the second driving device drives the screw to rotate, thereby driving the slide to move up and down; A pressing fixing plate is fixedly connected to the slide, and a pressing piece for pressing the micro switch at the top of the electric control handle is provided on one end of the pressing fixing plate away from the slide fixing plate, and the pressing piece is located above the product bracket.

[0008] Preferably, three second limit switches are further provided on the slide fixing plate on one side of the slide, the three second limit switches are respectively provided corresponding to the two ends and the middle of the slide, and the three second limit switches are all electrically connected to the second driving device.

[0009] Preferably, the second driving device is a second servo motor, and the second servo motor is fixedly arranged on the slide fixing plate through a second motor base.

[0010] Preferably, the rotating device includes a third driving device, which is fixedly arranged in the workbench. The third driving device is connected to a rotating mounting shaft through a third coupling. The rotating mounting shaft passes through the workbench and is fixedly connected to the bottom of the product bracket after passing through the second bearing seat. The second bearing seat is fixedly arranged on the workbench, and the rotating mounting shaft is rotatably connected to the second bearing seat through a bearing.

[0011] Preferably, the third driving device is a third servo motor, and the third servo motor is fixedly connected to the workbench through a third motor base, and the third motor base is fixedly arranged in the workbench.

[0012] Preferably, a first bearing seat is fixedly provided on the workbench between the first coupling and the expansion sleeve shaft, the transmission shaft passes through the first bearing seat, and is rotatably connected to the first bearing seat via a bearing sleeved on the transmission shaft.

[0013] Preferably, the first driving device is a first servo motor, and the first servo motor is fixedly arranged on the workbench through a first motor base.

[0014] The present invention utilizes a rotating device to realize the rotation of the product support on which the electric control handle is installed, utilizes a pressing device to realize the pressing of the micro switch at the top of the electric control handle, utilizes a first driving device to drive the transmission shaft to rotate, and drives the lever to realize the swing of the electric control handle installed on the product support, thereby realizing the testing of various indicators of the electric control handle; the operation is simple and the response speed is fast.

[0015] The present invention uses three servo motors as drive motors, offering high control precision, smooth operation, and fast speed response, meeting testing requirements. The servo motor encoders are metered and provide precise feedback of angle and position signals. The present invention is highly integrated, enabling multi-directional motion and testing of the electronically controlled handle in various positions within a single test setup. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 This is an axonometric drawing of the present invention.

[0018] Figure markings: 1-first servo motor, 2-first motor seat, 3-first coupling, 4-first bearing seat, 5-first bearing, 6-drive shaft, 7-second bearing, 8-expansion sleeve shaft, 9-expansion sleeve, 10-dial lever, 11-slide fixing plate, 12-pressing piece fixing plate, 13-slide, 14-pressing piece, 15-circlip, 16-third bearing, 17-second coupling, 18-second motor seat, 19-second servo motor, 20-electric control handle, 21-product bracket, 22-rotating mounting shaft, 23-second bearing seat, 24-workbench, 25-third coupling, 26-third motor seat, 27-third servo motor, 28-profile frame, 29-adjustment foot, 30-first limit switch bracket, 31-first limit switch, 32-second limit switch, 33-inner nesting, 34-bushing, 35-wire hole, 36-connector. DETAILED DESCRIPTION

[0019] The present invention provides a comprehensive life test device for an electric control handle 20, comprising a workbench 24, on which a product bracket 21 for mounting the electric control handle 20 is provided, and the product bracket 21 is connected to the workbench 24 via a rotating device; The workbench 24 is also provided with a first driving device, which is connected to a transmission shaft 6 through a first coupling 3. The end of the transmission shaft 6 away from the first coupling 3 is connected to an expansion sleeve shaft 8 through an expansion sleeve 9 sleeved on the transmission shaft 6. Two parallel shift rods 10 are fixedly connected to the expansion sleeve shaft 8. The ends of the two shift rods 10 away from the expansion sleeve shaft 8 are fixedly connected through a bushing 34. A through hole is provided on the bushing 34, and a third bearing 16 is clamped in the through hole. An inner nest 33 for being sleeved on the upper cylindrical surface of the electric control handle 20 is provided in the inner ring of the third bearing 16; the third bearing 16 is clamped in the through hole through a retaining spring 15.

[0020] The workbench 24 on both sides of the shift lever 10 is further provided with a first limit switch 31 for preventing the electric control handle 20 from swinging beyond a limited angle. The first limit switch 31 is electrically connected to the first drive device and is provided on the workbench 24 via a first limit switch 31 bracket 30. The workbench 24 is also provided with a pressing device for pressing the micro switch at the top of the electric control handle 20 .

[0021] In one embodiment, the pressing device includes a slide fixing plate 11 and a second driving device. The slide fixing plate 11 is fixedly disposed on the end of the expansion sleeve shaft 8 away from the transmission shaft 6. The slide fixing plate 11 is disposed vertically toward the product support 21. The ends of the two levers 10 away from the bushing 34 are respectively fixedly connected to the corresponding two sides of the slide fixing plate 11. A slide rail is provided on the upper portion of the side of the slide fixing plate 11 facing the product support 21, and a slide 13 is provided on the slide rail. A screw is threadedly connected to the slide 13, and one end of the screw facing the lower portion of the slide fixing plate 11 is connected to the second driving device through a second coupling 17. The second driving device is fixedly provided at the lower portion of the slide fixing plate 11, and the second driving device drives the screw to rotate, thereby driving the slide 13 to move up and down; The slide 13 is fixedly connected to a pressing fixing plate. An end of the pressing fixing plate away from the slide fixing plate 11 is provided with a pressing member 14 for pressing the micro switch at the top of the electric control handle 20 . The pressing member 14 is located above the product bracket 21 .

[0022] Three second limit switches 32 are further provided on the slide fixing plate 11 on one side of the slide 13 . The three second limit switches 32 are respectively provided corresponding to the two ends and the middle of the slide 13 , and the three second limit switches 32 are all electrically connected to the second driving device.

[0023] The second driving device is a second servo motor 19 , which is fixed on the slide fixing plate 11 via a second motor base 18 .

[0024] The pressing working principle is: the output shaft of the second servo motor 19 drives the screw to rotate through the second coupling 17, and the slide 13 realizes the up / down movement of the slider of the slide 13 through the continuous left / right rotation of the screw. At this time, the pressing member fixing plate 12 installed on the slide 13 drives the pressing member 14 to realize the pressing action on the micro switch at the top of the electric control handle 20.

[0025] The lead screw is coaxial with the output shaft of the second servo motor 19, ensuring reliable motion and accurate stroke control. A second limit switch 32 at the bottom of the slide 13 prevents the slide 13 from overtravelling downward, thereby preventing damage to the microswitch at the top of the joystick from being pressed. A second limit switch 32 in the middle of the slide 13 returns the slider to its center position after a press is completed. A second limit switch 32 at the top of the slide 13 prevents the slide 13 from overtravelling upward, thereby preventing damage to the slide 13 from collisions.

[0026] In one embodiment, the rotating device includes a third driving device, which is fixedly arranged in the workbench 24. The third driving device is connected to a rotating mounting shaft 22 through a third coupling 25. The rotating mounting shaft 22 passes through the workbench 24 and is fixedly connected to the bottom of the product bracket 21 after passing through the second bearing seat 23. The second bearing seat 23 is fixedly arranged on the workbench 24, and the rotating mounting shaft 22 is rotatably connected to the second bearing seat 23 through a bearing.

[0027] The third driving device is a third servo motor 27 . The third servo motor 27 is fixedly connected to the workbench 24 via a third motor base 26 . The third motor base 26 is fixedly disposed in the workbench 24 .

[0028] Rotation working principle: The output shaft of the third servo motor 27 drives the rotating installation shaft 22 to rotate through the third coupling 25. At this time, the product bracket 21 installed on the upper end surface of the rotating installation shaft 22 drives the electric control handle 20 to rotate simultaneously.

[0029] The output shaft of the third servo motor 27, the rotating mounting shaft 22 and the rotation center of the electric control handle 20 are all coaxial, ensuring the reliability of the rotation process and the accuracy of the rotation angle and orientation control.

[0030] In one embodiment, a first bearing 5 seat 4 is fixedly provided on the workbench 24 between the first coupling 3 and the expansion sleeve shaft 8, and the transmission shaft 6 passes through the first bearing 5 seat 4 and is rotatably connected to the first bearing 5 seat 4 through the first bearing 5 and the second bearing 7 sleeved on the transmission shaft 6.

[0031] The first driving device is a first servo motor 1 , which is fixed on the workbench 24 via a first motor base 2 .

[0032] The working principle of swinging: the output shaft of the first servo motor 1 drives the transmission shaft 6 to rotate left and right through the first coupling 3, and the transmission shaft 6 drives the slide fixed plate 11 to swing left and right. The shift lever 10 installed on both sides of the slide fixed plate 11 and the bushing 34 at the other end of the shift lever 10 follow the swing, and the inner nesting 33 inside the bushing 34 cooperates with the cylindrical surface of the upper end of the joystick of the electric control handle 20. At this time, the joystick of the electric control handle 20 follows the transmission shaft 6 to swing left and right, realizing the simulation of the driver's manual operation process.

[0033] The swing center of the output shaft of the first servo motor 1, the transmission shaft 6, and the slide fixing plate 11 is coaxial with the swing center of the electric control handle 20, and the inner ring of the bushing 34 is coaxial with the upper cylindrical surface of the electric control handle 20, ensuring the reliability of the test process and the accuracy of the swing angle control.

[0034] The first limit switches 31 installed on both sides of the slide fixing plate 11 can prevent the swing structure from causing damage to the joystick due to excessive position when driving the joystick of the electric control handle 20 to swing.

[0035] The workbench 24 is set on a profile frame 28 , and the bottom of the profile frame 28 is connected to an adjustable foot 29 for supporting the profile frame 28 .

[0036] The present invention is driven by three servo motors. The electric control handle 20 is installed on the product bracket 21 and rotates together with the product bracket 21 under the drive of the third servo motor 27. At the same time, the encoder of the third servo motor 27 feeds back the current position signal, so that the product can be rotated to any specified position; under the drive of the first servo motor 1, it can swing at any angle, simulating the driver's operation; the pressing device is connected to the lever 10, and the pressing operation can be realized when the electric control handle 20 is swung to any angle.

[0037] The present invention can automatically control the angle and orientation of the electric control handle 20 and maintain it at any angle and orientation. The power and signal lines of the first servo motor 1, the second servo motor 19, and the electric control handle 20 under test, located above the workbench 24, are all led to the bottom of the workbench 24 through the wire holes 35. Together with the power and signal lines of the third servo motor 27, they are connected to the host computer through the connector 36 on the side panel of the profile frame. The host computer can set the parameters and control the motion of the above three parts, and at the same time, it can realize the real-time collection of the swing and pressure signals, that is, the current and voltage signals, when the electric control handle 20 rotates to various orientations. After the host computer operation instructions are set, the system can implement a cyclic operation of the electric control handle 20 and record and save the test data during the process until the life test requirements are met and stop.

Claims

1. A comprehensive life test device for an electric control handle, comprising a work surface, wherein a product bracket for mounting the electric control handle is provided on the work surface, characterized in that: The product support is connected to the workbench via a rotating device; The workbench is also provided with a first driving device, which is connected to a transmission shaft through a first coupling, and the end of the transmission shaft away from the first coupling is connected to an expansion sleeve shaft through an expansion sleeve sleeved on the transmission shaft, and two parallel shift rods are fixedly connected to the expansion sleeve shaft, and the ends of the two shift rods away from the expansion sleeve shaft are fixedly connected by a bushing, and a through hole is provided on the bushing, and a third bearing is clamped in the through hole, and an inner nesting is provided in the inner ring of the third bearing for sleeved on the cylindrical surface of the upper end of the electric control handle; The workbench located on both sides of the shift rod is also provided with a first limit switch for preventing the electric control handle from swinging beyond a limited angle, and the first limit switch is electrically connected to the first drive device; The workbench is also provided with a pressing device for pressing the micro switch at the top end of the electric control handle.

2. A comprehensive life test device for an electric control handle as claimed in claim 1, characterized in that: The pressing device includes a slide fixing plate and a second driving device. The slide fixing plate is fixedly arranged on the end of the expansion sleeve shaft away from the transmission shaft. The slide fixing plate is arranged vertically toward the product support. The ends of the two shifting rods away from the bushing are respectively fixedly connected to the corresponding two sides of the slide fixing plate. A slide rail is provided on the upper portion of the slide fixing plate facing the product support, a slide is provided on the slide rail, a screw is threadedly connected to the slide, and one end of the screw toward the lower portion of the slide fixing plate is connected to the second driving device through a second coupling, the second driving device is fixedly provided at the lower portion of the slide fixing plate, and the second driving device drives the screw to rotate, thereby driving the slide to move up and down; A pressing fixing plate is fixedly connected to the slide, and a pressing piece for pressing the micro switch at the top of the electric control handle is provided on one end of the pressing fixing plate away from the slide fixing plate, and the pressing piece is located above the product bracket.

3. A comprehensive life test device for an electric control handle as claimed in claim 2, characterized in that: Three second limit switches are also provided on the slide fixing plate on one side of the slide. The three second limit switches are respectively provided corresponding to the two ends and the middle of the slide, and the three second limit switches are all electrically connected to the second driving device.

4. A comprehensive life test device for an electric control handle as claimed in claim 2, characterized in that: The second driving device is a second servo motor, and the second servo motor is fixedly arranged on the slide fixing plate through a second motor base.

5. The comprehensive life test device for an electric control handle as claimed in claim 1, characterized in that: The rotating device includes a third driving device, which is fixedly arranged in the workbench. The third driving device is connected to a rotating mounting shaft through a third coupling. The rotating mounting shaft passes through the workbench and is fixedly connected to the bottom of the product bracket after passing through the second bearing seat. The second bearing seat is fixedly arranged on the workbench, and the rotating mounting shaft and the second bearing seat are rotatably connected through a bearing.

6. The comprehensive life test device for an electric control handle according to claim 1, characterized in that: The third driving device is a third servo motor, and the third servo motor is fixedly connected to the workbench through a third motor base, and the third motor base is fixedly arranged in the workbench.

7. The comprehensive life test device for an electric control handle according to claim 1, characterized in that: A first bearing seat is fixedly provided on the workbench between the first coupling and the expansion sleeve shaft. The transmission shaft passes through the first bearing seat and is rotatably connected to the first bearing seat via a bearing sleeved on the transmission shaft.

8. The comprehensive life test device for an electric control handle according to claim 1, characterized in that: The first driving device is a first servo motor, and the first servo motor is fixed on the workbench through a first motor base.

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