A device and method for detecting the load capacity of a servo

Abstract

The application provides a detection device for load capacity of servo, belonging to the field of aerospace technology and weapon technology, comprising a driving detection mechanism, a driven detection mechanism and a transmission mechanism, wherein the driving detection mechanism comprises a first driving device, a control assembly connected with the first driving device and a driving detection part connected with the control assembly; the driven detection mechanism comprises a second driving device, a circulation part connected with the second driving device and a driven detection part connected with the circulation part; the transmission mechanism comprises a first turning swing arm, a pull rod connected with the first turning swing arm and a second turning swing arm connected with the pull rod, the first turning swing arm is connected with the driving detection part, and the second turning swing arm is connected with the driven detection part. The detection device for load capacity of servo can simultaneously detect the load capacity of multiple servo output shafts and can cyclically detect.

Description

Technical Field

[0001] This invention belongs to the field of aerospace technology and weapons technology, and more specifically, it relates to a device and method for detecting the load-bearing capacity of a servo drive. Background Technology

[0002] The servo generates positive and negative thrust along the piston rod by changing the pressure of the oil on both sides of the piston, and applies it to the steering output shaft to realize the rotation of the output shaft in the forward and reverse directions. During this process, the steering output shaft is required to be able to withstand a force of 12,500 N·m and have an operating life of no less than 50,000 cycles.

[0003] Currently, there are no testing devices or methods on the market that can apply the required load, perform cyclic testing, and obtain data on the testing process to determine whether the servo output shaft meets the requirements, thus hindering product development. Therefore, there is an urgent need for a testing device and method to solve the problems of current technology, such as the inability to perform variable load testing, the inability to perform cyclic testing, the inability to obtain data on the testing process, the limitation to single-unit testing, and the high requirements for system flow rate and limited range of applicable rotational speeds. Summary of the Invention

[0004] To address the aforementioned deficiencies, the present invention provides a device and method for detecting the load-bearing capacity of a follower, thereby solving the problem that there are currently no related devices and methods on the market that can simultaneously detect the load-bearing capacity of multiple follower output shafts and cannot perform cyclic detection.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a device for detecting the load-bearing capacity of a servo drive, comprising:

[0006] An active detection mechanism includes a first driving device, a control component connected to the first driving device, and an active detection unit connected to the control component;

[0007] The driven detection mechanism includes a second drive device, a circulation part connected to the second drive device, and a driven detection part connected to the circulation part;

[0008] The transmission mechanism includes a first steering arm, a tie rod connected to the first steering arm, and a second steering arm connected to the tie rod. The first steering arm is connected to the active detection unit, and the second steering arm is connected to the driven detection unit.

[0009] Preferably, the control component is used to adjust / control the active detection mechanism.

[0010] Preferably, it includes an adjustment assembly for adjusting hydraulic pressure, the adjustment assembly being disposed within the driven detection unit.

[0011] Preferably, it includes a detection component for detecting hydraulic pressure within the device, the detection component being disposed on the control component and within the driven detection mechanism.

[0012] Preferably, it further includes a control component to prevent oil backflow, the control component being installed between the second drive device and the driven detection unit.

[0013] Preferably, at least one set of the driven detection mechanism is provided, and the driven detection mechanism and the transmission mechanism correspond one-to-one.

[0014] The present invention also provides a method for detecting the load-bearing capacity of a servo drive, comprising the following steps:

[0015] Step 1: Connect the first steering arm to the tie rod, connect the tie rod to the second steering arm, then connect the first steering arm to the active detection unit, and connect the second steering arm to the driven detection unit;

[0016] Step 2: Connect the control component to the active detection unit and the first drive device, install the adjustment component for adjusting hydraulic pressure inside the driven detection unit, and connect the circulation unit to the driven detection unit and the second drive device;

[0017] Step 3: Connect the control cable to the control component and the device equipped with the control software, and connect the acquisition cable to the control component, the driven detection unit, and the device equipped with the control software;

[0018] Step 4: Open the control software, start the second drive device, and drive the circulation section to expel the air in the oil circuit;

[0019] Step 5: After filling in all the test data in the control software interface, start the test.

[0020] Preferably, the active detection unit and the passive detection unit are fixed before step two.

[0021] Preferably, the first drive device and the second drive device are tested before step three to confirm that the drive devices are operating normally.

[0022] Preferably, the pressure inside the active detection mechanism and the driven detection mechanism is adjusted before step four.

[0023] As can be seen from the above solution, the device and method for detecting the load-bearing capacity of a follower provided by the present invention have the following advantages compared with the prior art: The present invention solves the problem that there are currently no related devices and methods on the market that can simultaneously detect the load-bearing capacity of multiple follower output shafts, and that cyclic detection is not possible. It also solves the problems of the current technology, such as the inability to perform variable load testing, the inability to obtain data on the testing process, high system flow requirements, and a small range of applicable rotational speeds. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A three-dimensional structural diagram of a device for detecting the load-bearing capacity of a servo drive provided by the present invention;

[0026] Figure 2 A top view of a device for detecting the load-bearing capacity of a servo drive, provided by the present invention;

[0027] Figure 3 Rear view of a device for detecting the load-bearing capacity of a servo drive provided by the present invention;

[0028] Figure 4 A schematic diagram of the hydraulic connection of a servo drive load-bearing capacity detection device provided by the present invention;

[0029] Figure 5 This is a schematic diagram of the follower's right-turn operation.

[0030] Figure 6 This is a schematic diagram of the follower's left-turn operation.

[0031] Figure 7 A software interface diagram of a control device for detecting the load-bearing capacity of a servo drive, provided by the present invention;

[0032] In the figure: 1. Active detection mechanism; 11. First drive device; 12. Control component; 13. Active detection unit; 2. Driven detection mechanism; 21. Second drive device; 22. Circulation unit; 23. Driven detection unit; 3. Transmission mechanism; 31. First steering arm; 32. Tie rod; 33. Second steering arm. Detailed Implementation

[0033] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0034] Example 1

[0035] Please refer to the following: Figures 1 to 7 The present invention will now describe a specific embodiment of a servo drive load-bearing capacity detection device. This servo drive load-bearing capacity detection device includes: an active detection mechanism 1, a driven detection mechanism 2, and a transmission mechanism 3. The active detection mechanism 1 includes a first drive device 11, a control component 12 connected to the first drive device 11, and an active detection unit 13 connected to the control component 12. The driven detection mechanism 2 includes a second drive device 21, a circulation unit 22 connected to the second drive device 21, and a driven detection unit 23 connected to the circulation unit 22. The transmission mechanism 3 includes a first steering arm 31, a pull rod 32 connected to the first steering arm 31, and a second steering arm 33 connected to the pull rod 32. The first steering arm 31 is connected to the active detection unit 13, and the second steering arm 33 is connected to the driven detection unit 23.

[0036] Compared with the prior art, the present invention provides a detection device for the load-bearing capacity of a follower. The device is connected to a first drive unit 11 and a control component 12, which in turn is connected to an active detection unit 13. The active detection unit 13 is rotatably connected to a first steering arm 31, which is rotatably connected to a tie rod 32. The tie rod 32 is rotatably connected to a second steering arm 33, which is rotatably connected to a driven detection unit 23. The driven detection unit 23 is connected to a circulation unit 22, which is connected to a second drive unit 21. This allows the first drive unit 11 to supply oil to the device and drive the control component 12. The control component 12 transmits power and oil to the active detection unit 13, which then drives the driven detection unit 23 to rotate in the same direction as the active detection unit 13 via the first steering arm 31, the tie rod 32, and the second steering arm 33. The rotation of the driven detection unit 23 promotes the circulation of oil within the device, achieving the purpose of simultaneously detecting multiple followers. It can also start the second drive device 21 to supply oil to the driven detection unit 23, so that the system can work continuously in a cycle, the oil can form a circulating flow, and the oil temperature can be controlled to prevent a large rise.

[0037] In some embodiments, please refer to the following: Figures 1 to 7The control component 12 is used to adjust / control the active detection mechanism 1. In this embodiment, the control component 12 can be configured as a speed regulating reversing valve group. By setting the speed regulating reversing valve group, the flow rate, pressure and direction of the oil output by the first drive device 11 can be adjusted / controlled, thereby adjusting / controlling the running speed, rotation direction and driving pressure of the active follower to be detected in the active detection unit 13. This facilitates the operation of the device as needed. Since the control component 12 can adjust / control the direction, flow rate and pressure of the oil output by the first drive device 11, the flow rate and pressure range in this system is wider, thereby driving the rotation speed range of the active detection unit 13 to be wider. Therefore, this device has low requirements for system flow rate and can adapt to a wider range of rotation speeds.

[0038] In some embodiments, please refer to the following: Figures 1 to 7 An adjustment component for adjusting hydraulic pressure is provided in the driven detection unit 23. In this embodiment, the adjustment component can be set as a balance valve. The balance valve is connected to the two oil ports of the driven follower to be detected (set in the driven detection unit 23) to reduce pressure when oil is discharged from the oil port and to realize variable load loading.

[0039] In some embodiments, please refer to the following: Figures 1 to 7 A detection component for detecting the hydraulic pressure inside the device is provided on the control component 12 and inside the driven detection mechanism 2. In this embodiment, the detection component can be set as a pressure gauge (P1-P4), which is installed at the two output ports (A, B) of the speed control valve group (control component 12) and at the two oil ports of the driven follower to be detected. The detection component detects the hydraulic pressure inside the device and works with the control component to achieve precise adjustment of the hydraulic pressure inside the device as needed.

[0040] In some embodiments, please refer to the following: Figures 1 to 7 A control component to prevent oil backflow is provided between the second drive device 32 and the driven detection unit 23. In this embodiment, the control component can be set as a one-way valve. The one-way valve controls the oil to flow only from the second drive device 32 to the driven follower to be detected and prevents backflow.

[0041] In some embodiments, please refer to the following: Figures 1 to 7 At least one set of driven detection mechanism 2 is provided, and the driven detection mechanism 2 corresponds one-to-one with the transmission mechanism 3, so that the device can detect at least two followers at the same time, thereby improving the detection efficiency of the device.

[0042] In some embodiments, please refer to the following: Figures 1 to 7Both the active detection unit 13 and the passive detection unit 23 include a bracket and a detection unit. The bracket is fixed to the T-slot platform (not shown in the figure) by hexagonal nuts and T-bolts. Fixing the bracket to the T-slot platform can ensure the stability and safety of the device during operation.

[0043] Compared with the prior art, the present invention provides a follower load-bearing capacity testing device, which is rotatably connected to the active detection unit 13 and the driven detection unit 23 by a tie rod 32, a first steering swing arm 31 and a second steering swing arm 33. The active follower on the active detection unit 13 is driven to rotate by the hydraulic pressure provided by the first drive device 11, thereby driving the driven follower on the driven detection unit 23 to rotate in the same direction. During the rotation, the oil pressure at the oil outlet of the driven follower is controlled by a balance valve (adjustment component), so as to apply a load to the follower and adjust it as needed. The four pressure gauges (detection components) in the system detect the data during the process. By controlling the energization and de-energization of two electromagnets, YA1 and YA2, in the three-position four-way directional valves in the hydraulic system (controlled by control equipment and control software, the control equipment is not described in this document), cyclic testing is achieved. This solves the technical problems of loading the follower output shaft with the required load, detecting test process data and cyclic testing. Since the system is equipped with an active follower mechanism 1 for active loading and a passive follower mechanism 2 for passive loading, at least two followers can be tested simultaneously.

[0044] Example 2

[0045] Please refer to the following: Figures 1 to 7 The present invention also provides a method for detecting the load-bearing capacity of a follower, which is described in detail below. This method for detecting the load-bearing capacity of a follower includes the following steps: Step 1, connecting the first steering arm 31 to the tie rod 32, connecting the tie rod 32 to the second steering arm 33, then connecting the first steering arm 31 to the active detection unit 13, and connecting the second steering arm 33 to the driven detection unit 23; Step 2, connecting the control component 12 to the active detection unit 13 and the first drive device 11, installing a regulating component for adjusting hydraulic pressure inside the driven detection unit 23, and connecting the circulation unit 22 to the driven detection unit 23 and the second drive device 21; Step 3, connecting the control cable to the control component 12 and the device equipped with control software, and connecting the acquisition cable to the control component 12, the driven detection unit 23, and the device equipped with control software; Step 4, opening the control software, starting the second drive device 21, and driving the circulation unit 22 to expel air from the oil circuit; Step 5, after filling in all the detection data in the control software interface, starting the detection.

[0046] In this embodiment, the tie rod 32 is rotatably connected to the first steering arm 31 and the second steering arm 33 via nuts and screws. The first steering arm 31 is rotatably connected to the active detection unit 13 via nuts and screws, and the second steering arm 33 is rotatably connected to the driven detection unit 23 via nuts and screws. This enables the active follower to drive the passive follower. According to the hydraulic schematic diagram, the control component 12 is connected to the active detection unit 13 and the first drive device 11. The circulation unit 22 is connected to the driven detection unit 23 equipped with the adjustment component (for adjusting oil pressure) and the second drive device 21. This enables variable load loading. Then, the control... Connect the control cable plug of the equipment to YA1 and YA2 of the solenoid directional valve. Connect the cable plug of the control equipment's acquisition end to the four pressure measuring points P1 to P4 of the pressure gauge in sequence. Connect the equipment with the control software to the control cable and acquisition cable to enable monitoring and control of this device. Open the control software, start the hydraulic oil source, and ensure that all relief valves are fully open. Control the solenoid directional valve to switch left and right about 5 to 10 times to purge air from the oil circuit. In the "Switching Test" column of the control software interface, fill in the number of switching times, left opening time, left closing time, right opening time, and right closing time. Press the "Start" button to begin the test.

[0047] In some embodiments, please refer to the following: Figures 1 to 7 Before step two, the support parts of the active detection unit 13 and the driven detection unit 23 are fixed to the T-slot platform (not shown in the figure) by hexagonal nuts and T-bolts. Fixing the support to the T-slot platform can ensure the stability and safety of the device during operation.

[0048] In some embodiments, please refer to the following: Figures 1 to 7 Before step three, start the first drive unit 11 and the second drive unit 21 to confirm that the oil supply is normal and ensure the normal operation of the device.

[0049] In some embodiments, please refer to the following: Figures 1 to 7 Before step four, adjust the positions of the overflow valves inside the active detection mechanism 1 and the driven detection mechanism 2 to the required pressure according to actual needs to ensure safety and accuracy during the detection process.

[0050] Compared with the prior art, the present invention provides a method for detecting the load-bearing capacity of a servo drive, which arranges at least one active detection unit 13 and at least one passive detection unit 23 to realize the simultaneous detection of at least two sets of products, thereby improving the detection efficiency of the detection device. The adjustment component for adjusting hydraulic pressure inside the passive detection unit 23 can realize variable load loading. At the same time, the acquisition cable and control cable are connected to the equipment equipped with control software to obtain the data of the detection process, thereby solving the problems of the current technology that cannot perform variable load loading detection and cannot obtain the data of the detection process.

[0051] It should be understood that the terms "upper" and "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for detecting the load-bearing capacity of a servo drive, characterized in that, include: The active detection mechanism (1) includes a first drive device (11), a control component (12) connected to the first drive device (11), and an active detection unit (13) connected to the control component (12). The driven detection mechanism (2) includes a second drive device (21), a circulation part (22) connected to the second drive device (21), and a driven detection part (23) connected to the circulation part (22). The transmission mechanism (3) includes a first steering arm (31), a tie rod (32) connected to the first steering arm (31), and a second steering arm (33) connected to the tie rod (32). The first steering arm (31) is connected to the active detection unit (13), and the second steering arm (33) is connected to the driven detection unit (23). The control component (12) is used to adjust / control the active detection mechanism (1); The control component (12) is configured as a speed control reversing valve group. By setting the speed control reversing valve group, the flow rate, pressure and direction of the oil output by the first drive device (11) can be controlled, thereby controlling the running speed, rotation direction and driving pressure of the active follower to be detected in the active detection unit (13). It includes an adjustment assembly for adjusting hydraulic pressure, the adjustment assembly being disposed within the driven detection unit (23); Includes a detection component for detecting hydraulic pressure within the device, the detection component being disposed on the control component (12) and within the driven detection mechanism (2); At least one set of the driven detection mechanism (2) is provided, and the driven detection mechanism (2) and the transmission mechanism (3) correspond one-to-one; The first drive device (11) can supply oil to the device and drive the control component (12) to run. The control component (12) transmits power and oil to the active detection unit (13). Then, through the first steering arm (31), the tie rod (32) and the second steering arm (33), the driven detection unit (23) and the active detection unit (13) are driven to run in the same direction. The driven detection unit (23) runs, thereby driving the oil to circulate in the device, so as to achieve the purpose of simultaneously detecting multiple followers. It can also start the second drive device (21) to supply oil to the driven detection unit (23), so that the system can work continuously in a cycle, the oil forms a circulating flow, and the oil temperature is controlled to not rise significantly.

2. The device for detecting the load-bearing capacity of a servo drive as described in claim 1, characterized in that, Also includes: A control component to prevent oil backflow is installed between the second drive device (32) and the driven detection unit (23).

3. A method for detecting the load-bearing capacity of a servo drive as described in any one of claims 1-2, comprising the following steps: Step 1: Connect the first steering arm (31) to the tie rod (32), connect the tie rod (32) to the second steering arm (33), then connect the first steering arm (31) to the active detection unit (13), and connect the second steering arm (33) to the driven detection unit (23); Step 2: Connect the control component (12) to the active detection unit (13) and the first drive device (11), install the adjustment component for adjusting hydraulic pressure inside the driven detection unit (23), and connect the circulation unit (22) to the driven detection unit (23) and the second drive device (21); Step 3: Connect the control cable to the control component (12) and the device equipped with the control software, and connect the acquisition cable to the control component (12), the slave detection unit (23) and the device equipped with the control software; Step 4: Open the control software and start the second drive device (21) to drive the circulation unit (22) to discharge the air in the oil circuit; Step 5: After filling in all the test data in the control software interface, start the test.

4. The method for detecting the load-bearing capacity of a servo drive as described in claim 3, characterized in that, Before step two, fix the active detection unit (13) and the passive detection unit (23).

5. The method for detecting the load-bearing capacity of a servo drive as described in claim 4, characterized in that, Before step three, test the first drive device (11) and the second drive device (21) to confirm that the drive devices are operating normally.

6. The method for detecting the load-bearing capacity of a servo drive as described in claim 5, characterized in that, Before step four, the pressure inside the active detection mechanism (1) and the driven detection mechanism (2) is adjusted.

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