Overrunning clutch disengagement rotating speed testing device and disengagement rotating speed testing method

Abstract

The invention discloses a device and a method for testing the disengagement rotating speed of an overrun clutch. The device comprises an input shaft, an output shaft, a direct-current resistance tester and a load motor, the output shaft is used for connecting a clutch inner ring; the input shaft is used for being connected with the clutch outer ring and has a first state for driving the clutch outer ring to be gradually accelerated in the overrunning direction and a second state for driving the clutch outer ring to be gradually accelerated in the joint direction. The input shaft is provided with a first rotating speed sensor for detecting the rotating speed of the input shaft, and the first rotating speed sensor is used for transmitting a rotating speed value to the controller; the direct current resistance tester is used for measuring a first resistance value of the clutch and transmitting the first resistance value to the controller, and the controller compares the first resistance value with a standard resistance value to obtain an adjusting instruction and controls the input shaft to stop according to the adjusting instruction. The load motor has a third state in which the load motor is connected with the output shaft and a fourth state in which the load motor is separated from the output shaft. According to the invention, clutch disengagement rotating speed tests in an overrunning state and a starting state can be carried out.

Description

Technical Field

[0001] The invention relates to the technical field of overrunning clutch test and in particular to an overrunning clutch disengagement speed test device and a disengagement speed test method. Background Art

[0002] Aircraft engines are generally started by a starter installed on the accessory drive system. The starter needs to rotate the gas generator rotor to a certain speed before the aircraft engine can self-sustain and start to a stable operating speed. Otherwise, the aircraft engine may overheat and cause a starting failure. After a successful start, a centrifugal disengagement type overrunning clutch is generally used to disconnect the starter torque.

[0003] The disengagement speed of the overrunning clutch directly affects the design of the accessory transmission chain. On the one hand, the full-speed overrunning speed of the clutch should be greater than the disengagement speed in the overrunning state of the clutch. Otherwise, the eccentric roller of the clutch cannot throw off the inner ring of the clutch in the working state, which will cause sliding friction between the eccentric roller and the inner ring, causing its wear to increase. On the other hand, the maximum speed of the starter belt to the clutch when the aircraft engine is started should be less than the disengagement speed in the clutch engagement state. Otherwise, the clutch will be disengaged in the starting state, so that the starter cannot drive the gas generator rotor to the maximum speed, which is prone to overheating and causing starting failure. Therefore, verifying the correctness of the theoretical calculation through the overrunning clutch disengagement speed test plays a very critical role in improving the forward design capability of the clutch.

[0004] At present, the disengagement speed test of the overrunning clutch of an aircraft engine is mainly determined by measuring the change in the friction torque of the clutch. Figure 1 As shown, the traditional aircraft engine overrunning clutch disengagement speed test equipment is mainly composed of a power motor 1, a coupling 2, a speed increaser 3, a clutch test piece 4 and a torque sensor 5. The output end of the power motor 1 is connected to the outer ring of the clutch test piece, and the torque sensor 5 is connected to the inner ring of the clutch test piece. During the test, the power motor 1 is started in the clutch overrunning direction, and the torque sensor 5 is used to measure the friction torque of the clutch from the inner ring of the clutch. The clutch disengagement speed is obtained by testing the change of the clutch friction torque.

[0005] However, the above-mentioned traditional aircraft engine overrunning clutch disengagement speed test equipment can only measure the clutch disengagement speed in the overrunning state, and cannot measure the clutch disengagement speed in the starting state; therefore, there is an urgent need for a test device that can measure the disengagement speed of the aircraft engine overrunning clutch in the overrunning state and the disengagement speed of the aircraft engine in the starting state. Summary of the invention

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that there is a disengagement speed testing device that can realize both the disengagement speed test of the overrunning clutch in the overtaking state and the disengagement speed test of the overrunning clutch in the starting state, thereby providing an overrunning clutch disengagement speed testing device and a disengagement speed testing method.

[0007] According to a first aspect of the present invention, a device for testing the disengagement speed of an overrunning clutch is provided, comprising:

[0008] Test platform;

[0009] Output shaft, used to connect the inner ring of the clutch;

[0010] An input shaft, used to connect the clutch outer ring, the input shaft having a first state of driving the clutch outer ring to gradually accelerate in an overrunning direction, and a second state of driving the clutch outer ring to gradually accelerate in an engagement direction;

[0011] a first speed sensor, disposed on the input shaft, and used to detect a first speed when the input shaft is in a first state and a second speed when the input shaft is in a second state, and transmit the first speed and the second speed to a controller;

[0012] A DC resistance tester, wherein the first end and the second end are respectively connected to the clutch inner ring and the clutch outer ring, and are used to measure a first resistance value, wherein the DC resistance tester transmits the first resistance value to the controller, and the controller compares the first resistance value with a standard resistance value, outputs an adjustment instruction when the first resistance value is greater than the standard resistance value, and controls the input shaft to stop according to the adjustment instruction;

[0013] The load motor is arranged on the test platform and has a third state of being connected with the output shaft and applying a working load, and a fourth state of being disconnected from the output shaft.

[0014] The overrunning clutch disengagement speed test device according to the present invention has at least the following technical effects:

[0015] By switching the input shaft between the first state and the second state, and switching the load motor between the third state and the fourth state; when testing the disengagement speed of the overrunning clutch in the overrunning state, the input shaft is switched to the first state and the load motor is switched to the fourth state, and the first end and the second end of the DC resistance tester are respectively connected to the clutch inner ring and the clutch outer ring, and then the input shaft drives the clutch outer ring to gradually accelerate from zero speed in the overrunning direction. At the beginning, because the eccentric roller of the overrunning clutch contacts the clutch inner ring, the first resistance value measured by the DC resistance tester is a small resistance and is smaller than the standard resistance value. As the clutch outer ring accelerates in the overrunning direction until the eccentric roller of the overrunning clutch disengages from the clutch inner ring, the first resistance value measured by the DC resistance tester is a high resistance and is larger than the standard resistance value. At this time, the first speed measured by the first speed sensor for the input shaft in the first state is the clutch disengagement speed in the overrunning state. When testing the disengagement speed of the overrunning clutch in the starting state, the load motor is switched to the third state to apply the actual working load to the output shaft, and the input shaft is switched to the second state. Then the input shaft drives the outer ring of the clutch to gradually accelerate from zero speed along the engagement direction. At the beginning, because the eccentric roller of the overrunning clutch contacts the inner ring of the clutch, the first resistance value measured by the DC resistance tester is a small resistance and is smaller than the standard resistance value. As the outer ring of the clutch accelerates along the engagement direction until the eccentric roller of the overrunning clutch disengages from the inner ring of the clutch, the first resistance value measured by the DC resistance tester is a high resistance and is larger than the standard resistance value. At this time, the second speed measured by the first speed sensor for the input shaft in the second state is the clutch disengagement speed in the starting state. It is achieved that the clutch disengagement speed test in the overrunning state and the clutch disengagement speed test in the starting state can be carried out on the same test device, which is beneficial to improving the forward design capability of the clutch.

[0016] In an optional embodiment, the output shaft is provided with a first conductive slip ring, the input shaft is provided with a second conductive slip ring, the first end of the DC resistance tester is connected to the first conductive slip ring, and the second end of the DC resistance tester is connected to the second conductive slip ring.

[0017] In an optional implementation, a DC power supply is connected between the second end of the DC resistance tester and the second conductive slip ring.

[0018] In an optional implementation, a first insulating adapter sleeve coupling is provided between the load motor in the third state and the output shaft.

[0019] In an optional embodiment, it further includes a driving motor disposed on the test platform, and the output end of the driving motor is connected to the input shaft.

[0020] In an optional implementation, a second insulating adapter sleeve coupling is provided between the drive motor and the input shaft.

[0021] In an optional embodiment, it also includes a second speed sensor arranged on the output shaft, the second speed sensor is used to detect the speed of the output shaft to obtain a third speed, and transmit the third speed to the controller; the controller compares the second speed and the third speed, and outputs the adjustment instruction when the difference between the second speed and the third speed is greater than the standard speed difference.

[0022] A disengagement speed test method provided according to a second aspect of the present invention is applied to the disengagement speed test device of the overrunning clutch provided in the first aspect, and the disengagement speed test method comprises the following steps:

[0023] Switching the load motor to the fourth state;

[0024] Switch the input shaft to the first state, driving the outer ring of the clutch to gradually accelerate in the overtaking direction;

[0025] Detecting the rotation speed of the input shaft by a first rotation speed sensor to obtain a first rotation speed, and transmitting the first rotation speed to a controller;

[0026] Using a DC resistance tester to measure a first resistance value of the clutch when the input shaft is in a first state, and transmitting the first resistance value of the clutch when the input shaft is in the first state to the controller;

[0027] The controller compares the first resistance value of the clutch when the input shaft is in the first state with the standard resistance value, outputs an adjustment instruction when the first resistance value of the clutch is greater than the standard resistance value when the input shaft is in the first state, controls the input shaft to stop according to the adjustment instruction, and uses the corresponding first speed as the disengagement speed of the overrunning clutch in the overrunning state;

[0028] Switching the load motor to the third state and applying a set working condition load to the output shaft;

[0029] Switching the input shaft to a second state, driving the outer ring of the clutch to gradually accelerate in the engagement direction;

[0030] detecting the rotation speed of the input shaft by the first rotation speed sensor to obtain a second rotation speed, and transmitting the second rotation speed to the controller;

[0031] Using the DC resistance tester to measure the first resistance value of the clutch when the input shaft is in the second state, and transmitting the first resistance value of the clutch when the input shaft is in the second state to the controller;

[0032] The controller compares the first resistance value of the clutch when the input shaft is in the second state with the standard resistance value, and outputs an adjustment instruction when the first resistance value of the clutch is greater than the standard resistance value when the input shaft is in the second state, controls the input shaft to stop according to the adjustment instruction, and outputs the corresponding second speed as the disengagement speed of the overrunning clutch in the starting state.

[0033] A disengagement speed test method according to the present invention has at least the following technical effects:

[0034] By switching the input shaft between the first state and the second state, and switching the load motor between the third state and the fourth state; when testing the disengagement speed of the overrunning clutch in the overrunning state, the input shaft is switched to the first state and the load motor is switched to the fourth state, and the first end and the second end of the DC resistance tester are respectively connected to the clutch inner ring and the clutch outer ring, and then the input shaft drives the clutch outer ring to gradually accelerate from zero speed in the overrunning direction. At the beginning, because the eccentric roller of the overrunning clutch contacts the clutch inner ring, the first resistance value measured by the DC resistance tester is a small resistance and is smaller than the standard resistance value. As the clutch outer ring accelerates in the overrunning direction until the eccentric roller of the overrunning clutch disengages from the clutch inner ring, the first resistance value measured by the DC resistance tester is a high resistance and is larger than the standard resistance value. At this time, the first speed measured by the first speed sensor for the input shaft in the first state is the clutch disengagement speed in the overrunning state. When testing the disengagement speed of the overrunning clutch in the starting state, the load motor is switched to the third state to apply the actual working load to the output shaft, and the input shaft is switched to the second state. Then the input shaft drives the outer ring of the clutch to gradually accelerate from zero speed along the engagement direction. At the beginning, because the eccentric roller of the overrunning clutch contacts the inner ring of the clutch, the first resistance value measured by the DC resistance tester is a small resistance and is smaller than the standard resistance value. As the outer ring of the clutch accelerates along the engagement direction until the eccentric roller of the overrunning clutch disengages from the inner ring of the clutch, the first resistance value measured by the DC resistance tester is a high resistance and is larger than the standard resistance value. At this time, the second speed measured by the first speed sensor for the input shaft in the second state is the clutch disengagement speed in the starting state. It is achieved that the clutch disengagement speed test in the overrunning state and the clutch disengagement speed test in the starting state can be carried out on the same test device, which is beneficial to improving the forward design capability of the clutch.

[0035] In an optional embodiment, after transmitting the first resistance value of the clutch when the input shaft is in the first state to the controller, it also includes generating a first relationship curve according to the first speed and the first resistance value of the clutch when the input shaft is in the first state, and outputting the first relationship curve.

[0036] In an optional embodiment, after transmitting the first resistance value of the clutch when the input shaft is in the second state to the controller, it also includes generating a second relationship curve according to the second speed and the first resistance value of the clutch when the input shaft is in the second state, and outputting the second relationship curve.

[0037] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 It is a structural schematic diagram of a conventional aircraft engine overrunning clutch disengagement speed test device;

[0040] Figure 2 It is a structural schematic diagram of an overrunning clutch disengagement speed testing device of this embodiment.

[0041] Description of reference numerals:

[0042] 1-power motor, 2-coupling, 3-speed increaser, 4-clutch test piece, 5-torque sensor;

[0043] 100-output shaft, 110-first conductive slip ring, 120-second conductive slip ring, 200-input shaft, 310-clutch inner ring, 320-clutch outer ring, 330-eccentric roller, 340-casing, 350-insulating bearing, 400-controller, 500-DC resistance tester, 600-load motor, 610-first insulating adapter sleeve coupling, 700-DC power supply, 800-drive motor, 810-second insulating adapter sleeve coupling. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0045] In the description of this embodiment, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this embodiment and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting this embodiment. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0046] In the description of this embodiment, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0047] The speed of overrunning clutch disengagement directly affects the design of accessory drive chain. The correctness of theoretical calculation is verified by overrunning clutch disengagement speed test, which plays a very critical role in improving the forward design capability of clutch. Figure 1 As shown, the aircraft engine overrunning clutch disengagement speed test equipment of the related technology is mainly composed of a power motor 1, a coupling 2, a speed increaser 3, a clutch test piece 4 and a torque sensor 5. The output end of the power motor 1 is connected to the outer ring of the clutch test piece 4, and the torque sensor 5 is connected to the inner ring of the clutch test piece 4. During the test, the power motor 1 is started in the clutch overrunning direction, and the friction torque of the clutch is measured from the inner ring 310 of the clutch by the torque sensor 5. The clutch disengagement speed is obtained by testing the change of the clutch friction torque; however, the above-mentioned disengagement speed test equipment can only measure the clutch disengagement speed in the overrunning state, and cannot measure the clutch disengagement speed in the starting state; and the clutch friction torque is very small, requiring the torque sensor 5 to have high test accuracy and sampling frequency, which is not easy to implement and has high cost; in order to solve the above-mentioned technical defects, an overrunning clutch disengagement speed test device and a disengagement speed test method according to an embodiment of the present invention are provided.

[0048] Combine the following Figure 2 , describing an embodiment of the present invention.

[0049] According to a first aspect of an embodiment of the present invention, there is provided an overrunning clutch disengagement speed test device, comprising a test platform, an input shaft 200, an output shaft 100 and a DC resistance tester 500; the output shaft 100 is used to connect the clutch inner ring 310, the input shaft 200 is used to connect the clutch outer ring 320, the input shaft 200 has a first state in which the clutch outer ring 320 is driven to gradually accelerate in an overrunning direction, and a second state in which the clutch outer ring 320 is driven to gradually accelerate in an engagement direction; the input shaft 200 is provided with a first speed sensor, the first speed sensor being used to detect a first speed when the input shaft 200 is in the first state and a second speed when the input shaft 200 is in the second state, and the first speed sensor is used to detect a first speed when the input shaft 200 is in the first state and a second speed when the input shaft 200 is in the second state, and the second speed sensor is used to detect a first speed when the input shaft 200 is in the first state and a second speed when the input shaft 200 is in the second state, and the first ... A speed and the second speed are transmitted to the controller 400; the first end and the second end of the DC resistance tester 500 are respectively connected to the clutch inner ring 310 and the clutch outer ring 320, and are used to measure a first resistance value, the DC resistance tester 500 transmits the first resistance value to the controller 400, the controller 400 compares the first resistance value with the standard resistance value, and outputs an adjustment instruction when the first resistance value is greater than the standard resistance value, and controls the input shaft 200 to stop according to the adjustment instruction; the test platform is provided with a load motor 600, and the load motor 600 has a third state connected to the output shaft 100 and applying a working load, and a fourth state disconnected from the output shaft 100.

[0050] The disengagement speed test device of the present embodiment switches the input shaft 200 between the first state and the second state, and switches the load motor 600 between the third state and the fourth state; when testing the disengagement speed of the overrunning clutch in the overrunning state, the input shaft 200 is switched to the first state and the load motor 600 is switched to the fourth state, and the first end and the second end of the DC resistance tester 500 are connected to the clutch inner ring 310 and the clutch outer ring 320 respectively, and then the input shaft 200 drives the clutch outer ring 320 to rotate from zero speed to the fourth state in the overrunning direction. Gradually accelerate, at the beginning, because the eccentric roller 330 of the overrunning clutch is in contact with the clutch inner ring 310, the first resistance value measured by the DC resistance tester 500 is a small resistance and is smaller than the standard resistance value. As the clutch outer ring 320 accelerates along the overrunning direction until the eccentric roller 330 of the overrunning clutch is disengaged from the clutch inner ring 310, the first resistance value measured by the DC resistance tester 500 is a high resistance and is larger than the standard resistance value. At this time, the first speed measured by the first speed sensor corresponding to the input shaft 200 in the first state is the clutch disengagement speed in the overrunning state. When testing the disengagement speed of the overrunning clutch in the starting state, the load motor 600 is switched to the third state to apply the actual working load to the output shaft 100, and the input shaft 200 is switched to the second state, and then the input shaft 200 drives the clutch outer ring 320 to gradually accelerate from zero speed along the engagement direction. At the beginning, because the eccentric roller 330 of the overrunning clutch is in contact with the clutch inner ring 310, the first resistance value measured by the DC resistance tester 500 is a small resistance and is smaller than the standard resistance value. As the clutch outer ring 320 accelerates along the engagement direction until the eccentric roller 330 of the overrunning clutch is disengaged from the clutch inner ring 310, the first resistance value measured by the DC resistance tester 500 is a high resistance and is greater than the standard resistance value. At this time, the second speed measured by the first speed sensor corresponding to the input shaft 200 in the second state is the clutch disengagement speed in the starting state; it is achieved that the clutch disengagement speed test in the overrunning state and the clutch disengagement speed test in the starting state can be carried out on the same test device, which is conducive to improving the forward design capability of the clutch.

[0051] It should be noted that the present embodiment adopts the interface resistance principle to realize the clutch disengagement speed test. When the eccentric roller 330 of the clutch contacts the clutch inner ring 310, the clutch outer ring 320, the clutch inner ring 310, and the DC resistance tester 500 form a closed circuit loop, so the resistance value measured by the DC resistance tester 500 at this time is a small resistance and is less than the standard resistance value. When the eccentric roller 330 of the clutch disengages from the clutch inner ring 310, the circuit loop formed by the clutch outer ring 320, the clutch inner ring 310, and the DC resistance tester 500 is disconnected, so the resistance value measured by the DC resistance tester 500 at this time is a small resistance and is greater than the standard resistance value. That is, in this embodiment, the resistance value between the clutch outer ring 320 and the clutch inner ring 310 at different speeds in the overrunning direction or the engagement direction is read by the DC resistance tester 500 to determine whether the eccentric roller 330 is lifted or not, thereby indirectly obtaining the disengagement speed of the clutch in the overrunning state or the starting state. Compared with the use of the torque sensor 5 with high test accuracy and sampling frequency to test the change of the clutch friction torque to obtain the clutch disengagement speed, the test of this embodiment is easier to implement, and has high test accuracy and good repeatability. Because the test of this embodiment is easy to implement and has good repeatability, when conducting the clutch disengagement speed test in the overrunning state or the starting state, the test process can be repeated for the same overrunning clutch test piece for multiple times, and the average value of the overrunning disengagement speed or the engagement disengagement speed of the multiple tests is taken as the final overrunning disengagement speed or the engagement disengagement speed of the clutch, and the test accuracy is higher.

[0052] It can be understood that the overrunning clutch test piece of this embodiment adopts a diagonal overrunning clutch for an aviation power system; and in order to avoid the formation of a circuit loop between the casing 340 of the overrunning clutch test piece, which causes inaccurate data of the measured first resistance value, the bearing of the overrunning clutch test piece is set to an insulating bearing 350, which can specifically be a hybrid ceramic ball bearing, a bearing coated with insulating paint on the outer surface, or a bearing with an insulating bushing on the outer surface.

[0053] It is understood that the overrunning direction refers to the direction in which the clutch outer ring 320 cannot drive the clutch inner ring 310 and the eccentric roller 330 slides and frictionally operates relative to the clutch inner ring 310. The engagement direction refers to the direction in which the clutch outer ring 320 drives the clutch inner ring 310.

[0054] It should be noted that the standard resistance value refers to a standard resistance value that is greater than the resistance value measured when the eccentric roller 330 of the clutch is not disengaged from the clutch inner ring 310, and is slightly less than or equal to the resistance value measured when the eccentric roller 330 of the clutch is disengaged from the clutch inner ring 310; the difference between the resistance value measured when the eccentric roller 330 of the clutch is disengaged from the clutch inner ring 310 and the resistance value measured when the eccentric roller 330 of the clutch is not disengaged from the clutch inner ring 310 exceeds the range of the DC resistance tester 500.

[0055] Specifically, the controller 400 is a computer or a single chip microcomputer.

[0056] In some embodiments, the output shaft 100 is provided with a first conductive slip ring 110, the input shaft 200 is provided with a second conductive slip ring 120, the first end of the DC resistance tester 500 is connected to the first conductive slip ring 110, and the second end of the DC resistance tester 500 is connected to the second conductive slip ring 120. During the test, the electrical signals of the output shaft 100 and the input shaft 200 are respectively led out and transmitted to the first end and the second end of the DC resistance tester 500 through the first conductive slip ring 110 and the second conductive slip ring 120 to form a loop, so as to prevent the first end and the second end of the DC resistance tester 500 from rotating with the output shaft 100 and the input shaft 200, respectively, and effectively reduce the risk of the first end and the second end of the DC resistance tester 500 being pulled off by rotation.

[0057] Specifically, a DC power supply 700 is connected between the second end of the DC resistance tester 500 and the second conductive slip ring 120. The DC power supply 700 is used to directly provide power to the DC resistance tester 500, reducing the configuration of the external household circuit, making the structure of this embodiment more streamlined.

[0058] In some embodiments, a first insulating adapter sleeve coupling 610 is provided between the load motor 600 in the third state and the output shaft 100. The load of the diagonal brace overrunning clutch for the aviation power system is not large, and the sleeve of the diaphragm disc coupling is modified into a plastic connecting sleeve to form the first insulating adapter sleeve coupling 610, which can not only meet the requirement of applying the actual working load to the output shaft 100, but also prevent the formation of a circuit loop between the test platform and the test platform, resulting in inaccurate data of the measured first resistance value.

[0059] Specifically, the load motor 600 is slidably connected to the test platform, and the end of the load motor 600 is detachably connected to the output shaft 100 by bolts or interference fit, so as to switch the load motor 600 between the third state and the fourth state.

[0060] In some embodiments, the disengagement speed test device further comprises a drive motor 800 disposed on the test platform, and the output end of the drive motor 800 is connected to the input shaft 200. The drive motor 800 is used to provide power for the input shaft 200, so as to drive the clutch outer ring 320 to gradually accelerate from zero speed in the overtaking direction during the clutch disengagement speed test in the overtaking state; and to facilitate driving the clutch outer ring 320 to gradually accelerate in the engagement direction during the clutch disengagement speed test in the starting state.

[0061] Specifically, a second insulating adapter sleeve coupling 810 is provided between the driving motor 800 and the input shaft 200; the second insulating adapter sleeve coupling 810 can prevent a circuit loop from being formed between the DC resistance tester 500 and the test platform, thereby preventing the measured first resistance value from being inaccurate.

[0062] In some embodiments, the disengagement speed test device also includes a second speed sensor arranged on the output shaft 100. In the process of carrying out the clutch disengagement speed test in the starting state, the second speed sensor is used to detect the speed of the output shaft 100 to obtain a third speed, and transmit the third speed to the controller 400; the controller 400 compares the second speed with the third speed, and outputs the adjustment instruction when the difference between the second speed and the third speed is greater than the standard speed difference. At this time, the controller 400 outputs the second speed measured by the first speed sensor for the input shaft 200 in the second state as the clutch disengagement speed in the starting state, and controls the input shaft 200 to stop and end the test according to the adjustment instruction; in the process of carrying out the clutch disengagement speed test in the starting state, the clutch eccentric roller 330 is disengaged by using the two conditions that the measured first resistance value suddenly changes or the speed of the input shaft 200 is out of sync with the speed of the output shaft 100.

[0063] It should be noted that the standard speed difference refers to the difference between the speed of the input shaft 200 in the second state and the speed of the output shaft 100 when the eccentric roller 330 of the overrunning clutch is disengaged from the clutch inner ring 310 during the clutch disengagement speed test in the starting state.

[0064] According to a second aspect of an embodiment of the present invention, a disengagement speed test method is further provided, which is applied to the disengagement speed test device of the overrunning clutch provided in the first aspect of the embodiment of the present invention, and the disengagement speed test method comprises the following steps:

[0065] Switching the load motor 600 to the fourth state;

[0066] Switch the input shaft 200 to the first state, driving the clutch outer ring 320 to gradually accelerate in the overtaking direction;

[0067] The first rotation speed sensor detects the rotation speed of the input shaft 200 to obtain a first rotation speed, and transmits the first rotation speed to the controller 400;

[0068] Using a DC resistance tester 500 to measure a first resistance value of the clutch when the input shaft 200 is in the first state, and transmitting the first resistance value of the clutch when the input shaft 200 is in the first state to the controller 400;

[0069] The controller 400 compares the first resistance value of the clutch when the input shaft 200 is in the first state with the standard resistance value, outputs an adjustment instruction when the first resistance value of the clutch is greater than the standard resistance value when the input shaft 200 is in the first state, controls the input shaft 200 to stop according to the adjustment instruction, and uses the corresponding first speed as the disengagement speed of the overrunning clutch in the overrunning state;

[0070] Switching the load motor 600 to the third state and applying a set working load to the output shaft 100;

[0071] Switch the input shaft 200 to the second state, driving the clutch outer ring 320 to gradually accelerate along the engagement direction;

[0072] The first speed sensor detects the speed of the input shaft 200 to obtain a second speed, and transmits the second speed to the controller 400;

[0073] Using the DC resistance tester 500 to measure the first resistance value of the clutch when the input shaft 200 is in the second state, and transmitting the first resistance value of the clutch when the input shaft 200 is in the second state to the controller 400;

[0074] The controller 400 compares the first resistance value of the clutch with the standard resistance value when the input shaft 200 is in the second state, and outputs an adjustment instruction when the first resistance value of the clutch is greater than the standard resistance value when the input shaft 200 is in the second state, controls the input shaft 200 to stop according to the adjustment instruction, and outputs the corresponding second speed as the disengagement speed of the overrunning clutch in the starting state.

[0075] The disengagement speed test method of this embodiment is to switch the input shaft 200 between the first state and the second state, and switch the load motor 600 between the third state and the fourth state; when testing the disengagement speed of the overrunning clutch in the overrunning state, the input shaft 200 is switched to the first state and the load motor 600 is switched to the fourth state, and the first end and the second end of the DC resistance tester 500 are respectively connected to the clutch inner ring 310 and the clutch outer ring 320, and then the input shaft 200 drives the clutch outer ring 320 to rotate from zero speed to the fourth state in the overrunning direction. Gradually accelerate, at the beginning, because the eccentric roller 330 of the overrunning clutch is in contact with the clutch inner ring 310, the first resistance value measured by the DC resistance tester 500 is a small resistance and is smaller than the standard resistance value. As the clutch outer ring 320 accelerates along the overrunning direction until the eccentric roller 330 of the overrunning clutch is disengaged from the clutch inner ring 310, the first resistance value measured by the DC resistance tester 500 is a high resistance and is larger than the standard resistance value. At this time, the first speed measured by the first speed sensor corresponding to the input shaft 200 in the first state is the clutch disengagement speed in the overrunning state. When testing the disengagement speed of the overrunning clutch in the starting state, the load motor 600 is switched to the third state to apply the actual working load to the output shaft 100, and the input shaft 200 is switched to the second state, and then the input shaft 200 drives the clutch outer ring 320 to gradually accelerate from zero speed along the engagement direction. At the beginning, because the eccentric roller 330 of the overrunning clutch is in contact with the clutch inner ring 310, the first resistance value measured by the DC resistance tester 500 is a small resistance and is smaller than the standard resistance value. As the clutch outer ring 320 accelerates along the engagement direction until the eccentric roller 330 of the overrunning clutch is disengaged from the clutch inner ring 310, the first resistance value measured by the DC resistance tester 500 is a high resistance and is greater than the standard resistance value. At this time, the second speed measured by the first speed sensor corresponding to the input shaft 200 in the second state is the clutch disengagement speed in the starting state; it is achieved that the clutch disengagement speed test in the overrunning state and the clutch disengagement speed test in the starting state can be carried out on the same test device, which is conducive to improving the forward design capability of the clutch.

[0076] Specifically, the corresponding first speed refers to the first speed detected by the first speed sensor when the first resistance value of the clutch is greater than the standard resistance value when the input shaft 200 is in the first state.

[0077] Specifically, the corresponding second speed refers to the second speed detected by the first speed sensor when the first resistance value of the clutch is greater than the standard resistance value when the input shaft 200 is in the second state.

[0078] In some embodiments, after transmitting the first resistance value of the clutch when the input shaft 200 is in the first state to the controller 400, it also includes generating a first relationship curve according to the first speed and the first resistance value of the clutch when the input shaft 200 is in the first state, and outputting the first relationship curve; the first relationship curve is convenient for test personnel to conduct visual observation, so as to more intuitively understand that in the process of conducting the clutch disengagement speed test in the overtaking state, the state of the overtaking clutch test piece changes as its speed gradually accelerates in the overtaking direction.

[0079] Specifically, after transmitting the first resistance value of the clutch when the input shaft 200 is in the second state to the controller 400, a second relationship curve is generated according to the second speed and the first resistance value of the clutch when the input shaft 200 is in the second state, and the second relationship curve is output. The second relationship curve is convenient for test personnel to observe visually, so as to more intuitively understand the change of the state of the overrunning clutch test piece as its speed gradually accelerates along the engagement direction during the clutch disengagement speed test in the take-off state.

[0080] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An overrunning clutch disengagement speed test device, characterized in that: include: Test platform; An output shaft (100) for connecting to a clutch inner ring (310); An input shaft (200) is used to connect the clutch outer ring (320), wherein the input shaft (200) has a first state in which the clutch outer ring (320) is driven to gradually accelerate in an overrunning direction, and a second state in which the clutch outer ring (320) is driven to gradually accelerate in an engagement direction; a first rotation speed sensor, arranged on the input shaft (200), and used for detecting a first rotation speed when the input shaft (200) is in a first state and a second rotation speed when the input shaft (200) is in a second state, and transmitting the first rotation speed and the second rotation speed to a controller (400); A DC resistance tester (500), wherein a first end and a second end are respectively connected to a clutch inner ring (310) and a clutch outer ring (320), and is used to measure a first resistance value; the DC resistance tester (500) transmits the first resistance value to the controller (400); the controller (400) compares the first resistance value with a standard resistance value, outputs an adjustment instruction when the first resistance value is greater than the standard resistance value, and controls the input shaft (200) to stop according to the adjustment instruction; The load motor (600) is arranged on the test platform and has a third state of being connected to the output shaft (100) and applying a working load, and a fourth state of being disconnected from the output shaft (100).

2. The overrunning clutch disengagement speed test device according to claim 1, characterized in that: The output shaft (100) is provided with a first conductive slip ring (110), the input shaft (200) is provided with a second conductive slip ring (120), a first end of the DC resistance tester (500) is connected to the first conductive slip ring (110), and a second end of the DC resistance tester (500) is connected to the second conductive slip ring (120).

3. The overrunning clutch disengagement speed test device according to claim 2, characterized in that: A DC power source (700) is connected between the second end of the DC resistance tester (500) and the second conductive slip ring (120).

4. The overrunning clutch disengagement speed test device according to claim 3, characterized in that: A first insulating adapter sleeve coupling (610) is provided between the load motor (600) in the third state and the output shaft (100).

5. An overrunning clutch disengagement speed test device according to any one of claims 1 to 4, characterized in that: It also includes a driving motor (800) arranged on the test platform, wherein the output end of the driving motor (800) is connected to the input shaft (200).

6. The overrunning clutch disengagement speed test device according to claim 5, characterized in that: A second insulating adapter sleeve coupling (810) is provided between the drive motor (800) and the input shaft (200).

7. The overrunning clutch disengagement speed test device according to claim 1, characterized in that: The invention also includes a second speed sensor arranged on the output shaft (100), the second speed sensor is used to detect the speed of the output shaft (100) to obtain a third speed, and transmit the third speed to the controller (400); the controller (400) compares the second speed with the third speed, and outputs the adjustment instruction when the difference between the second speed and the third speed is greater than the standard speed difference.

8. A disengagement speed test method, applied to the overrunning clutch disengagement speed test device according to any one of claims 1 to 7, characterized in that: The disengagement speed test method comprises the following steps: Switching the load motor (600) to a fourth state; Switching the input shaft (200) to a first state, driving the clutch outer ring (320) to gradually accelerate in an overtaking direction; Detecting the rotation speed of the input shaft (200) by a first rotation speed sensor to obtain a first rotation speed, and transmitting the first rotation speed to a controller (400); Using a DC resistance tester (500) to measure a first resistance value of the clutch when the input shaft (200) is in a first state, and transmitting the first resistance value of the clutch when the input shaft (200) is in the first state to the controller (400); The controller (400) compares the first resistance value of the clutch when the input shaft (200) is in the first state with a standard resistance value, outputs an adjustment instruction when the first resistance value of the clutch is greater than the standard resistance value when the input shaft (200) is in the first state, controls the input shaft (200) to stop according to the adjustment instruction, and uses the corresponding first speed as the disengagement speed of the overrunning clutch in the overrunning state; Switching the load motor (600) to a third state and applying a set working condition load to the output shaft (100); Switching the input shaft (200) to a second state, driving the clutch outer ring (320) to gradually accelerate along the engagement direction; detecting the rotation speed of the input shaft (200) by means of the first rotation speed sensor to obtain a second rotation speed, and transmitting the second rotation speed to the controller (400); Using the DC resistance tester (500) to measure a first resistance value of the clutch when the input shaft (200) is in the second state, and transmitting the first resistance value of the clutch when the input shaft (200) is in the second state to the controller (400); The controller (400) compares the first resistance value of the clutch when the input shaft (200) is in the second state with a standard resistance value, outputs an adjustment instruction when the first resistance value of the clutch is greater than the standard resistance value when the input shaft (200) is in the second state, controls the input shaft (200) to stop according to the adjustment instruction, and outputs the corresponding second speed as the disengagement speed of the overrunning clutch in the starting state.

9. A disengagement speed test method according to claim 8, characterized in that: After transmitting the first resistance value of the clutch when the input shaft (200) is in the first state to the controller (400), the method further includes generating a first relationship curve according to the first rotational speed and the first resistance value of the clutch when the input shaft (200) is in the first state, and outputting the first relationship curve.

10. A disengagement speed test method according to claim 8 or 9, characterized in that: After transmitting the first resistance value of the clutch when the input shaft (200) is in the second state to the controller (400), the method further includes generating a second relationship curve according to the second speed and the first resistance value of the clutch when the input shaft (200) is in the second state, and outputting the second relationship curve.

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