A test system for drive mechanisms using an overrunning clutch

Abstract

This application relates to the field of control rod drive mechanism testing technology, specifically, to a drive mechanism testing system employing an overrunning clutch. The system includes a base, a fixed bracket, a long shaft, a photoelectric encoder, a magnetic powder brake, a torque sensor, an inertia disk, an overrunning clutch, a control mechanism, and a drive mechanism. The photoelectric encoder is fixed to the left side of the photoelectric encoder bracket; the magnetic powder brake is positioned between the photoelectric encoder bracket and the inertia bracket, and the torque sensor is positioned outside the magnetic powder brake; the long shaft is positioned between the inertia bracket and the clutch bracket; the inertia disk is connected to the long shaft via a key; the overrunning clutch is positioned between the clutch bracket and the mechanism bracket; the control mechanism is located above the overrunning clutch; and the drive mechanism is fixed to the right side of the mechanism bracket. This application simplifies the operation of the drive mechanism by utilizing the overrunning clutch, requiring only the detection of the drive mechanism's initial and final positions, and using the time difference to calculate the drive mechanism's reset time.

Description

Technical Field

[0001] This application relates to the field of control rod drive mechanism testing technology, and more specifically, to a drive mechanism testing system employing an overrunning clutch. Background Technology

[0002] The control rod drive mechanism is an important device in a nuclear reactor for regulating reactor power and for emergency shutdown. It is required to output a stable torque to drive the control rod assembly to a specified position, namely the 770° terminal position, and hold it after reaching the 770° position. Under specified operating conditions, it should be able to quickly return from the 770° terminal position to the 0° initial position in a passive manner, thereby stopping the reactor.

[0003] Before installation and delivery, the control rod drive mechanism needs to be tested for important indicators such as output torque, rotation angle, and reset time. Particular attention should be paid to the output torque and reset time of the drive mechanism at high temperatures. The original testing system used a photoelectric encoder to detect the angle of rotation of the load driven by the drive mechanism, and collected the angle and time difference before and after the drive mechanism reset to calculate the reset time. During the reset process, the calculated reset time is often longer than the theoretically calculated reset time because the load affects the rotation of the drive mechanism to the initial position. Analysis revealed that during rapid reset of the drive mechanism, the simulated load installed at the end of the testing system is prone to jamming during rotation, causing the reset time to not reflect the true reset time of the drive mechanism. Furthermore, the upper limit of the operating temperature of the photoelectric encoder and the simulated load is only 85℃, making it impossible to test the performance of the drive mechanism at an operating temperature of 200℃. Summary of the Invention

[0004] This application provides a test system for a drive mechanism using an overrunning clutch. The ratchet-type overrunning clutch reduces the impact of load on the reset time during rapid mechanism reset.

[0005] To achieve the above objectives, this application provides a test system for a drive mechanism employing an overrunning clutch, comprising a base, a fixed bracket, a long shaft, a photoelectric encoder, a magnetic powder brake, a torque sensor, an inertia disk, an overrunning clutch, a control mechanism, and a drive mechanism. The fixed bracket is mounted on the base and includes a photoelectric encoder bracket, an inertia disk bracket, a clutch bracket, and a mechanism bracket. The photoelectric encoder is fixed to the left side of the photoelectric encoder bracket. The magnetic powder brake is positioned between the photoelectric encoder bracket and the inertia disk bracket, and the torque sensor is positioned outside the magnetic powder brake. The long shaft is positioned between the inertia disk bracket and the clutch bracket, with both ends fixed to the bracket via bearings and bearing caps. The inertia disk is connected to the long shaft via a key. The overrunning clutch is positioned between the clutch bracket and the mechanism bracket. The control mechanism is also positioned between the clutch bracket and the mechanism bracket, above the overrunning clutch, and connected to the overrunning clutch via gears. The drive mechanism is fixed to the right side of the mechanism bracket via a clamp.

[0006] Furthermore, one end of the magnetic powder brake is fixed on the optical fiber support, and the other end is equipped with a magnetic shaft, which is connected to the long shaft via a key.

[0007] Furthermore, one end of the overrunning clutch is connected to a long shaft on the clutch bracket via a key, and the other end is connected to the drive mechanism on the mechanism bracket via a splined shaft.

[0008] Furthermore, the control mechanism includes a drive control mechanism, a switch control mechanism, and a controller.

[0009] Furthermore, the drive control mechanism includes a spindle end cover, a spindle, a large gear, and a small gear. One end of the spindle is fixed to the clutch bracket via the spindle end cover, and the other end is connected to the switch control mechanism on the mechanism bracket via the spindle end cover. The large gear is mounted on the spindle, and the small gear is mounted on the splined shaft. The large gear and the small gear mesh and drive each other.

[0010] Furthermore, the operating temperature of the switch control mechanism is ≤300℃, including a switch lever, a left switch, a left switch bracket, a right switch, and a right switch bracket, wherein: the left switch bracket and the right switch bracket are both mounted on the spindle end cover; the left switch is mounted on the left switch bracket, and the right switch is mounted on the right switch bracket; the switch lever is mounted on the spindle and can rotate between the left switch and the right switch.

[0011] Furthermore, the controller is electrically connected to the photoelectric encoder, magnetic powder brake, torque sensor, drive mechanism, left switch, and right switch via cables.

[0012] Furthermore, the controller can determine the position of the drive mechanism based on the states of the left and right switches.

[0013] Furthermore, the transmission ratio between the pinion and the gear is 1:4.05.

[0014] Furthermore, the inertia support, inertia disk, long shaft, clutch support, overrunning clutch, mechanism support, drive mechanism, drive control mechanism, and switch control mechanism are all housed inside the high-temperature chamber.

[0015] The present invention provides a test system for a drive mechanism employing an overrunning clutch, which has the following advantages:

[0016] 1. This application simplifies the operation of the drive mechanism by using an overrunning clutch and gear meshing. It only needs to detect the starting and ending positions of the drive mechanism and calculate the reset time of the drive mechanism using the time difference. This avoids the risk of multiple switches being placed on the output shaft of the drive mechanism, which can easily cause the switches to jam during rapid reset. At the same time, the controller does not need to collect multiple states of multiple switches, which simplifies the control strategy.

[0017] 2. In this application, the magnetic powder brake, torque sensor, photoelectric encoder, and controller are placed outside the high-temperature chamber, while the rest are placed inside the high-temperature chamber. The upper limit of the operating temperature of the monitored switch control mechanism is 300℃, which can test the torque, rotation, and reset time characteristics of the drive mechanism at high temperatures.

[0018] 3. The switch control mechanism of this application is located on one side of the output shaft of the drive mechanism, which can truly reflect the starting and ending positions of the drive mechanism and accurately reflect the reset time of the control rod drive mechanism.

[0019] 4. This application also includes an inertia disk. The rotational inertia provided by the inertia disk during the rapid reset of the drive mechanism can effectively protect the various components on the load side and the outer ring of the overrunning clutch, avoiding damage to the equipment caused by the inertia generated by kinetic energy during rapid rotation. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application. In the drawings:

[0021] Figure 1 This is a schematic diagram of a test system for a drive mechanism employing an overrunning clutch, provided according to an embodiment of this application.

[0022] Figure 2 This is a right view (partial sectional view) of a test system for a drive mechanism employing an overrunning clutch provided according to an embodiment of this application;

[0023] Figure 3 This is a left view (partial sectional view) of a test system for a drive mechanism employing an overrunning clutch according to an embodiment of this application;

[0024] In the diagram: 1-base, 2-optical encoder bracket, 3-photoelectric encoder, 4-magnetic powder brake, 5-torque sensor, 6-magnetic shaft, 7-inertia bracket, 8-long shaft, 9-inertia disk, 10-clutch bracket, 11-clutch end cover, 12-overrunning clutch, 13-spindle end cover, 14-spindle, 15-large gear, 16-small gear, 17-mechanism bracket, 18-clamp, 19-drive mechanism, 20-cable, 21-controller, 22-switch, 23-left switch, 24-left switch bracket, 25-right switch, 26-right switch bracket. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0028] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0029] In addition, the term "multiple" should mean two or more.

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] like Figure 1As shown, this application provides a test system for a drive mechanism using an overrunning clutch, including a base 1, a fixed bracket, a long shaft 8, a photoelectric encoder 3, a magnetic powder brake 4, a torque sensor 5, an inertia disk 9, an overrunning clutch 12, a control mechanism, and a drive mechanism 19. The fixed bracket is mounted on the base 1 and includes a photoelectric encoder bracket 2, an inertia disk bracket 7, a clutch bracket 10, and a mechanism bracket 17. The photoelectric encoder 3 is fixed to the left side of the photoelectric encoder bracket 2. The magnetic powder brake 4 is disposed between the photoelectric encoder bracket 2 and the inertia disk bracket 7, and the torque sensor 5 is disposed outside the magnetic powder brake 4. The long shaft 8 is disposed between the inertia disk bracket 7 and the clutch bracket 10, with both ends fixed to the bracket via bearings and bearing caps. The inertia disk 9 is connected to the long shaft 8 via a key. The overrunning clutch 12 is disposed between the clutch bracket 10 and the mechanism bracket 17. The control mechanism is also disposed between the clutch bracket 10 and the mechanism bracket 17, located above the overrunning clutch 12, and connected to the overrunning clutch 12 via gears. The drive mechanism 19 is fixed to the right side of the mechanism bracket 17 via a clamp 18.

[0032] Specifically, the drive mechanism testing system using an overrunning clutch provided in this application embodiment is mainly used to test various performance indicators of the reactor control rod drive mechanism 19. The overrunning clutch 12 connects to the drive mechanism 19 and the simulated load. Compared to a conventional clutch, the overrunning clutch 12 has a one-way ratchet structure, is a purely mechanical structure, and can perform unidirectional operation. During rapid reset, it can instantly restore the simulated load to its initial position. During the test, when the drive mechanism 19 rotates forward, the ratchet in the overrunning clutch 12 engages, connecting the simulated load through the long shaft 8 and driving the simulated load to rotate. The photoelectric encoder 3 located at the end can detect the rotation angle of the simulated load. When the drive mechanism 19 rapidly resets, the ratchet in the overrunning clutch 12 disengages, one end of the load rotates freely, and the drive mechanism 19 resets. The reset is detected by a switch control mechanism located at one end of the mechanism, and the reset time of the drive mechanism 19 is calculated using the time difference. The system includes: a base 1 for fixing and installing the entire system; a mounting bracket on the base 1 to ensure the fixing and installation of various components; a photoelectric encoder 3 located at the leftmost end, primarily used to detect the real-time rotation angle of the simulated load; a magnetic powder brake 4 to add a simulated load to the drive mechanism 19; a torque sensor 5 to detect the magnitude of the load torque applied to the drive mechanism 19 by the magnetic powder brake 4 in real time; an inertia disk 9 to provide the rotational inertia of the drive mechanism 19 during rapid reset; and a control mechanism to record the time before and after the rotation of the drive mechanism 19, thereby enabling the utilization of... The reset time of the drive mechanism 19 is calculated using the time difference. The drive mechanism 19 is connected to the magnetic powder brake 4 (simulated load) via the overrunning clutch 12 and the long shaft 8. During the test, the drive mechanism 19 generally rotates from the initial position of 0° to the final position of 770°. At this time, the ratchet in the overrunning clutch 12 engages, which will drive the long shaft 8 to rotate 770°. The long shaft 8 will drive the inertia disk 9 and the magnetic powder brake 4 to rotate simultaneously. When the drive mechanism 19 resets quickly, the ratchet in the overrunning clutch 12 disengages, one end of the simulated load rotates freely, and the drive mechanism 19 resets.

[0033] Furthermore, one end of the magnetic powder brake 4 is fixed to the optical fiber support 2, and the other end is equipped with a magnetic shaft 6, which is connected to the long shaft 8 via a key. The magnetic powder brake 4 mainly serves as a simulated load for the drive mechanism 19, and is connected to the long shaft 8 via the magnetic shaft 6. When the drive mechanism 19 rotates in the forward direction, it drives the long shaft 8 to rotate through the overrunning clutch 12, and the magnetic powder brake 4 will rotate together under the drive of the long shaft 8 and the magnetic shaft 6. At this time, the photoelectric encoder 3 set on the other side of the optical fiber support 2 can detect the real-time rotation angle, while the torque sensor 5 set on the outside of the magnetic powder brake 4 can detect the magnitude of the load torque applied by the magnetic powder brake 4 to the drive mechanism 19 in real time.

[0034] Furthermore, such as Figure 3As shown, one end of the overrunning clutch 12 is connected to the long shaft 8 on the clutch bracket 10 via a key, and the other end is connected to the drive mechanism 19 on the mechanism bracket 17 via a splined shaft. One end of the overrunning clutch 12 is fixed to the clutch bracket 10 via a clutch end cover 11 and connected to the long shaft 8. The outer ring of the overrunning clutch 12 is connected to the clutch end cover 11 via a flat key. The overrunning clutch 12 has a ratchet structure inside. The inner ring of the overrunning clutch 12 is connected to the splined shaft via a flat key, and the splined shaft is connected to the drive mechanism 19 on the mechanism bracket 17. That is, the overrunning clutch 12 is located between the drive mechanism 19 and the long shaft 8.

[0035] Furthermore, the control mechanism includes a drive control mechanism, a switch control mechanism, and a controller 21. The control mechanism is mainly used to detect the operating status of the drive mechanism 19 and record the corresponding operating time, thereby accurately calculating the reset time of the drive mechanism 19.

[0036] Furthermore, the drive control mechanism includes a spindle end cover 13, a spindle 14, a large gear 15, and a small gear 16. One end of the spindle 14 is fixed to the clutch bracket 10 via the spindle end cover 13, and the other end is connected to the switch control mechanism on the mechanism bracket 17 via the spindle end cover 13. The large gear 15 is mounted on the spindle 14, and the small gear 16 is mounted on the splined shaft, with the large gear 15 and small gear 16 meshing and transmitting power. One end of the spindle 14 is fixed to the clutch bracket 10, and the other end is connected to the switch control mechanism on the mechanism bracket 17. The entire spindle 14 is connected to the splined shaft at the overrunning clutch 12 below via gear transmission. When the drive mechanism 19 rotates, the entire spindle 14 rotates simultaneously under the drive of the gears, thereby causing the switch of the switch control mechanism to rotate.

[0037] Furthermore, such as Figure 2 As shown, the operating temperature of the switch control mechanism is ≤300℃. It includes a switch lever 22, a left switch 23, a left switch bracket 24, a right switch 25, and a right switch bracket 26. Both the left switch bracket 24 and the right switch bracket 26 are mounted on the spindle end cover 13. The left switch 23 is mounted on the left switch bracket 24, and the right switch 25 is mounted on the right switch bracket 26. The switch lever 22 is mounted on the spindle 14 and can rotate between the left switch 23 and the right switch 25. The left switch 23 is mounted on the left side of the spindle end cover 13 via the left switch bracket 24, and the right switch 25 is mounted on the right side of the spindle end cover 13 via the right switch bracket 26. The switch lever 22 is mounted on the spindle 14, and as the drive mechanism 19 drives the spindle 14 to rotate, the switch lever 22 simultaneously rotates between the left switch 23 and the right switch 25.

[0038] Furthermore, the controller 21 is electrically connected to the photoelectric encoder 3, the magnetic powder brake 4, the torque sensor 5, the drive mechanism 19, the left switch 23, and the right switch 25 via cables 20. The controller 21 mainly controls each mechanism, records data, and processes and provides data feedback.

[0039] Furthermore, the controller 21 can determine the position of the drive mechanism 19 based on the states of the left switch 23 and the right switch 25. When the controller 21 detects that the left switch 23 is closed, the drive mechanism 19 is in the initial position; when the controller 21 detects that the right switch 25 is closed, the drive mechanism 19 is in the final position.

[0040] Furthermore, the transmission ratio between the pinion 16 and the gear 15 is 1:4.05. When the drive mechanism 19 rotates from the initial position of 0° to the final position of 770°, the pinion 16 meshes with the gear 15. At this time, the pinion 16 rotates 770°, while the gear 15 rotates 190°. In this way, the spindle 14 and the switch lever 22 only need to rotate 190°. By using gear meshing, the 770° is reduced to 190°. Only the initial and final positions need to be detected, avoiding the risk of multiple switches being arranged on the output shaft of the drive mechanism 19, which could easily cause the switches to jam during rapid reset.

[0041] Furthermore, the inertia support 7, inertia disk 9, long shaft 8, clutch support 10, overrunning clutch 12, mechanism support 17, drive mechanism 19, drive control mechanism, and switch control mechanism are all housed inside the high-temperature chamber, while other structures are housed outside the high-temperature chamber. The upper limit of the working temperature of the switch control mechanism is 300℃. Depending on the actual situation, the length of the magnetic shaft 6 can be increased, so that the torque, rotation, and reset time characteristics of the drive mechanism 19 under high-temperature conditions can be tested.

[0042] Specifically, the working process of the drive mechanism testing system using an overrunning clutch provided in this application embodiment is as follows: First, the controller 21 energizes the photoelectric encoder 3, magnetic powder brake 4, torque sensor 5, drive mechanism 19, left switch 23, and right switch 25 respectively, connecting the magnetic powder brake 4 to the magnetic shaft 6. The controller 21 determines whether the left switch 23 is in the closed state, thereby determining whether the drive mechanism 19 is in the initial position. Then, the controller 21 sends a command to rotate the drive mechanism 19 by 770°. During the rotation of the drive mechanism 19, the ratchet in the overrunning clutch 12 engages, and the magnetic powder brake 4 rotates through the long shaft 8. The photoelectric encoder 3 at the end of the testing system can detect the rotation angle, and the torque sensor 5 can detect the load torque of the magnetic powder brake 4. The drive mechanism 19 rotates... After reaching the terminal position at 770°, the pinion 16 rotates 770° and the gear 15 rotates 190°, causing the spindle 14 and switch 22 to rotate simultaneously. At this time, the right switch 25 is triggered and closed by the switch 22. After the controller 21 detects that the right switch 25 is closed, it issues a command to stop the drive mechanism 19 and keep it in the current position. When the drive mechanism 19 quickly resets, the controller 21 de-energizes the drive mechanism 19, and the drive mechanism 19 will quickly rotate back to the initial position. At the same time, the magnetic powder brake 4 is disconnected from the magnetic shaft 6, and the inner end of the overrunning clutch 12 returns to the initial position with the drive mechanism 19. This causes the pinion 16 to rotate -770° and the gear 15 to rotate -190°. The outer ring of the overrunning clutch 12, as well as the inertia disk 9 and the long shaft 8, will rotate freely, with the inertia disk 9 providing 0.04 kg / m of torque. 2 The rotational inertia of the simulated load is offset by the rotational inertia of the control rod. Since the rotational inertia of the simulated load is constant, the rotational inertia provided by the inertia disk 9 is also constant. During the reset process, the controller 21 first records the time when the right switch 25 is open, and then records the time when the left switch 23 is closed. Subsequently, the reset time of the drive mechanism 19 is calculated using the time difference. In this embodiment, after multiple tests, the reset time of the drive mechanism 19 is 580ms-690ms, which is close to the theoretical calculated value of 619ms. Therefore, the drive mechanism test system with an overrunning clutch provided in this application can accurately calculate and reflect the reset time of the control rod drive mechanism 19.

[0043] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A test system for a drive mechanism employing an overrunning clutch, characterized in that, It includes a base, a fixed bracket, a long shaft, a photoelectric encoder, a magnetic powder brake, a torque sensor, an inertia disk, an overrunning clutch, a control mechanism, and a drive mechanism, among which: The fixed bracket is installed on the base and includes an optical fiber bracket, an inertia bracket, a clutch bracket, and a mechanism bracket; The photoelectric encoder is fixed to the left side of the optical encoder bracket; The magnetic powder brake is disposed between the optical bracing bracket and the inertia bracket, and the torque sensor is disposed on the outside of the magnetic powder brake; The long shaft is disposed between the inertia support and the clutch support, and both ends are fixedly installed to the support by bearings and bearing caps; One end of the magnetic powder brake is fixed on the optical fiber bracket, and the other end is provided with a magnetic shaft, which is connected to the long shaft by a key. The inertia disk is connected to the long shaft via a key; The overrunning clutch is disposed between the clutch bracket and the mechanism bracket; One end of the overrunning clutch is connected to a long shaft on the clutch bracket via a key, and the other end is connected to a drive mechanism on the mechanism bracket via a splined shaft. The control mechanism is also located between the clutch bracket and the mechanism bracket, above the overrunning clutch, and is connected to the overrunning clutch via gears. The drive mechanism is fixed to the right side of the mechanism bracket by a clamp; When the drive mechanism rotates forward, the ratchet in the overrunning clutch engages, connecting the simulated load through the long shaft and driving the simulated load to rotate. The photoelectric encoder at the end can detect the rotation angle of the simulated load. When the drive mechanism quickly resets, the ratchet in the overrunning clutch disengages, one end of the load rotates freely, the drive mechanism resets, and the switch control mechanism at one end of the mechanism detects the reset, using the time difference to calculate the reset time of the drive mechanism.

2. The test system for a drive mechanism employing an overrunning clutch according to claim 1, characterized in that, The control mechanism includes a drive control mechanism, a switch control mechanism, and a controller.

3. The test system for a drive mechanism employing an overrunning clutch according to claim 2, characterized in that, The drive control mechanism includes a spindle end cap, a spindle, a large gear, and a small gear, wherein: One end of the mandrel is fixed to the clutch bracket by the mandrel end cap, and the other end is connected to the switch control mechanism on the mechanism bracket by the mandrel end cap. The large gear is mounted on the spindle, and the small gear is mounted on the splined shaft. The large gear and the small gear mesh and drive each other.

4. The test system for a drive mechanism employing an overrunning clutch according to claim 3, characterized in that, The operating temperature of the switch control mechanism is ≤300℃, and it includes a switch lever, a left switch, a left switch bracket, a right switch, and a right switch bracket, wherein: Both the left switch bracket and the right switch bracket are mounted on the spindle end cap; The left switch is mounted on the left switch bracket, and the right switch is mounted on the right switch bracket; The switch toggle is mounted on the spindle and can rotate between the left switch and the right switch.

5. The test system for a drive mechanism employing an overrunning clutch according to claim 4, characterized in that, The controller is electrically connected to the photoelectric encoder, the magnetic powder brake, the torque sensor, the drive mechanism, the left switch, and the right switch via cables.

6. The test system for a drive mechanism employing an overrunning clutch according to claim 5, characterized in that, The controller can determine the position of the drive mechanism based on the states of the left and right switches.

7. The test system for a drive mechanism employing an overrunning clutch according to claim 3, characterized in that, The transmission ratio between the pinion and the gear is 1:4.

05.

8. The test system for a drive mechanism employing an overrunning clutch according to claim 4, characterized in that, The inertia support, the inertia disk, the long shaft, the clutch support, the overrunning clutch, the mechanism support, the drive mechanism, the drive control mechanism, and the switch control mechanism are all housed inside the high-temperature chamber.

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