Clutch performance detection tool

Abstract

The utility model discloses a kind of clutch performance detection tool, including oil jacket, transmission torsion cover and profiling inner hub, oil jacket is equipped with the lubricating oil flow channel and central hole of intercommunication, central hole is used to supply the one end of the rotating shaft of clutch to extend into;The inner tooth hub ring of transmission torsion cover is used to be mutually engaged with the tooth of the outer hub of clutch, transmission torsion cover is connected with the one end of oil jacket, and inner tooth ring is coaxially arranged with central hole, transmission torsion cover is equipped with a plurality of second oil outlet hole of circumferential distribution;The outer tooth ring on profiling inner hub is mutually engaged with the tooth of clutch's friction plate group, the end face of the other end of profiling inner hub is equipped with receiving groove and third oil outlet hole, central hole, lubricating oil channel of rotating shaft, receiving groove, third oil outlet hole, first oil outlet hole and second oil outlet hole on outer hub are sequentially communicated to form lubricating oil passage. Clutch is supplied with oil by lubricating oil flow channel, and the lubrication and cooling requirement of clutch can be satisfied by less lubricating oil, avoid damaging clutch, guarantee the accuracy of clutch performance test.

Description

Technical Field

[0001] This utility model relates to the field of clutch technology, and in particular to a clutch performance testing fixture. Background Technology

[0002] Clutch performance testing is a crucial step in the final inspection of the clutch and is essential for ensuring product quality. A clutch performance testing fixture is used to mount the clutch onto the testing equipment. The drive motor of the testing equipment is connected to the load motor of the testing equipment via the clutch performance testing fixture. A torque sensor on the testing equipment detects the torque of the clutch on the clutch performance testing fixture, thus determining the clutch's performance. Currently, clutch performance testing fixtures are typically vertical, using an oil tank to hold lubricating oil, immersing the clutch in it. This requires a relatively large amount of lubricating oil, and during the testing process, most of the clutch components are rotating. Under the influence of centrifugal force, there is a risk of insufficient lubrication in the clutch's lubrication channels and some components. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a clutch performance testing fixture that supplies lubricating oil to the clutch through a lubrication channel, ensuring oil supply to the clutch, preventing damage to the clutch, and guaranteeing the accuracy of clutch performance testing.

[0004] A clutch performance testing fixture according to an embodiment of the present invention includes an oil sleeve, a torque transmission sleeve, and a contoured inner hub. The oil sleeve is used for transmission connection with a drive motor. The oil sleeve is provided with a pressure oil flow channel and a lubricating oil flow channel. The pressure oil flow channel is used to communicate with the pressure chamber of the clutch. The oil sleeve is provided with a central hole communicating with the lubricating oil flow channel. The central hole is used for one end of the clutch shaft to extend into. The inner wall of the torque transmission sleeve is provided with an internal gear ring. The internal gear ring is used to mesh with the teeth on the outer hub of the clutch. One end of the torque transmission sleeve is connected to the oil sleeve, and the internal gear ring is coaxially arranged with the central hole. The torque transmission sleeve is provided with a plurality of circumferentially distributed second oil outlet holes. The hole penetrates the outer wall of the torque sleeve and the tooth surface of the inner gear ring; one end of the contoured inner hub is used for transmission connection with the load motor, and the other end of the contoured inner hub is provided with an outer gear ring, which meshes with the teeth of the friction plate assembly of the clutch. The end face of the other end of the contoured inner hub is provided with a receiving groove, which allows the other end of the rotating shaft to extend into. The other end of the contoured inner hub is provided with multiple circumferentially distributed third oil outlet holes, which penetrate the tooth surface of the outer gear ring and the inner wall of the receiving groove. The central hole, the lubricating oil passage of the rotating shaft, the receiving groove, the third oil outlet hole, the first oil outlet hole and the second oil outlet hole on the outer hub are sequentially connected to form a lubricating oil channel.

[0005] It has at least the following beneficial effects: The clutch is set on the testing equipment by the clutch performance testing fixture. Pressurized oil is supplied to the clutch through the pressure oil channel of the oil sleeve to control the clutch engagement and disengagement. Lubricating oil is supplied to the clutch through the lubricating oil channel of the oil sleeve, so the clutch performance can be tested. The lubricating oil supply to the clutch through the lubricating oil channel can meet the clutch lubrication and cooling requirements with a small amount of lubricating oil, avoid damage to the clutch, and ensure the accuracy of clutch performance testing.

[0006] According to some embodiments of this utility model, a connecting sleeve is further included. The connecting sleeve is fitted onto one end of the oil sleeve, and a seal is formed between the inner wall of the connecting sleeve and the outer wall of the oil sleeve. The oil sleeve is rotatable relative to the connecting sleeve. The connecting sleeve is provided with a pressure oil hole and a lubricating oil hole, both of which penetrate the outer wall and the inner wall of the connecting sleeve. An annular first pressure oil groove and an annular lubricating oil groove are provided on the outer wall of one end of the oil sleeve. The inlet of the pressure oil channel and the inlet of the lubricating oil channel are respectively located at the bottom of the first pressure oil groove and the bottom of the lubricating oil groove. The pressure oil hole, the first pressure oil groove, and the inlet of the pressure oil channel are sequentially connected, as are the lubricating oil hole, the lubricating oil groove, and the inlet of the lubricating oil channel.

[0007] According to some embodiments of the present invention, an annular first limiting groove is provided on the outer wall of one end of the oil sleeve. The first limiting groove is located between the first pressure oil groove and the lubricating oil groove. A first sealing ring is provided in the first limiting groove. The first sealing ring abuts against the inner wall of the connecting sleeve and forms a seal.

[0008] According to some embodiments of the present invention, the bottom of the receiving groove is provided with a rotatable plug, the plug abuts against the end face of the other end of the rotating shaft and seals the outlet of the first lubricating oil passage away from the lubricating oil flow passage.

[0009] According to some embodiments of the present invention, the center of the contoured inner hub is provided with a receiving through hole, and one end of the contoured inner hub is provided with a detachable end cap. The contoured inner hub and the end cap form the receiving groove. The plug is disposed in the receiving through hole through an angular contact ball bearing, and the end cap abuts against the angular contact ball bearing.

[0010] According to some embodiments of the present invention, a retaining ring is provided at one end of the plug, and an annular flange is provided at the other end of the plug. The retaining ring and the flange respectively abut against the two ends of the inner ring of the angular contact ball bearing.

[0011] According to some embodiments of the present invention, a first positioning shoulder is provided in the middle of the receiving through hole, a first needle roller bearing and a bushing are provided in the receiving through hole, one end of the first needle roller bearing abuts against the first positioning shoulder, the other end of the first needle roller bearing abuts against one end of the bushing, and the other end of the bushing abuts against the angular contact ball bearing.

[0012] According to some embodiments of the present invention, the bottom of the storage groove is provided with a first needle roller bearing, and the opening of the storage groove is provided with a second needle roller bearing. Both the first needle roller bearing and the second needle roller bearing can be movably sleeved on the other end of the rotating shaft.

[0013] According to some embodiments of the present invention, the opening of the storage groove is provided with a second positioning shoulder, and the side wall of the opening of the storage groove is provided with a detachable cover plate. The cover plate is annular and can be fitted onto the rotating shaft. The two ends of the second needle roller bearing respectively abut against the second positioning shoulder and the cover plate.

[0014] According to some embodiments of the present invention, a second limiting groove, a second pressure oil groove, and a third limiting groove, all of which are annular, are provided on the outer wall of one end of the oil sleeve. The second limiting groove, the second pressure oil groove, and the third limiting groove are arranged sequentially along the length direction of the oil sleeve. The outlet of the pressure oil flow channel is opened at the bottom of the second pressure oil groove and is arranged opposite to the inlet of the pressure chamber. A second sealing ring and a third sealing ring are respectively provided in the second limiting groove and the third limiting groove. The second sealing ring and the third sealing ring abut against the outer hub and form a seal.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the clutch structure; Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 3 This is a cross-sectional structural diagram of an embodiment of the present utility model; Figure 4 for Figure 3 A magnified view of a portion of point A in the middle; Figure 5 for Figure 3 A magnified view of a portion of point B in the middle; Figure 6 This is a schematic diagram of the contoured inner hub according to an embodiment of the present utility model; Figure 7 This is a schematic diagram of the structure of the oil sleeve according to an embodiment of the present utility model; Icon labels: Clutch 1, shaft 11, lubricating oil passage 111, outer hub 12, first oil outlet 121, friction plate assembly 13; Oil sleeve 2, pressure oil flow channel 21, lubricating oil flow channel 22, center hole 23, first pressure oil groove 24, lubricating oil groove 25, first limiting groove 26, second limiting groove 27, second pressure oil groove 28, third limiting groove 29; Torque sleeve 3, second oil outlet 31; Contouring inner hub 4, outer gear ring 41, storage groove 42, third oil outlet 43, end cap 44, cover plate 45; Connecting sleeve 5, lubricating oil hole 51, pressure oil pipe 52, lubricating oil pipe 53; Plug 6, angular contact ball bearing 61; First needle roller bearing 7; Bushing 8; Second needle roller bearing 9. Detailed Implementation

[0017] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0018] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0019] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0020] Reference Figure 1 The clutch 1 includes a rotating shaft 11, an outer hub 12, a friction plate assembly 13, and a steel plate assembly. The rotating shaft 11 is provided with a lubricating oil passage 111. The lubricating oil passage 111 includes a lubricating oil passage inlet on the end face of one end of the rotating shaft 11, a first lubricating oil passage outlet on the end face of the other end of the rotating shaft 11, and a plurality of second lubricating oil passage outlets on the outer wall of the rotating shaft 11. The outer hub 12 is provided with a plurality of circumferentially distributed first oil outlet holes 121.

[0021] Reference Figures 2 to 5 This utility model discloses a clutch performance testing fixture, including an oil sleeve 2, a torque transmission sleeve 3, and a contoured inner hub 4. The oil sleeve 2 is used for transmission connection with a drive motor. The oil sleeve 2 is provided with a pressure oil flow channel 21 and a lubricating oil flow channel 22. The pressure oil flow channel 21 is used to communicate with the pressure chamber of the clutch 1. The oil sleeve 2 is provided with a central hole 23 that communicates with the lubricating oil flow channel 22. The central hole 23 is used for one end of the rotating shaft 11 of the clutch 1 to extend into. The inner wall of the torque transmission sleeve 3 is provided with an internal gear ring, which is used to mesh with the teeth on the outer hub 12 of the clutch 1. One end of the torque transmission sleeve 3 is connected to one end of the oil sleeve 2, and the internal gear ring is coaxially arranged with the central hole 23. The torque transmission sleeve 3 is provided with multiple circumferentially distributed second oil outlet holes 31, which penetrate the outer wall of the torque transmission sleeve 3 and the tooth surface of the internal gear ring. One end of the contoured inner hub 4 is used for transmission connection with the load motor, and the other end of the contoured inner hub 4 is provided with an external gear ring 41, which meshes with the teeth of the friction plate assembly 13 of the clutch 1. The end face of the other end of the contoured inner hub 4 is provided with a receiving groove 42, into which the other end of the rotating shaft 11 extends. Figure 6 The other end of the contoured inner hub 4 is provided with multiple circumferentially distributed third oil outlet holes 43. The third oil outlet holes 43 penetrate the tooth surface of the outer gear ring 41 and the inner wall of the receiving groove 42, and are arranged in sequence according to... Figure 4 , Figure 3 and Figure 5 The center hole 23, the lubricating oil passage 111 of the rotating shaft 11, the receiving groove 42, the third oil outlet hole 43, the first oil outlet hole 121 and the second oil outlet hole 31 on the outer hub 12 are connected in sequence to form a lubricating oil channel.

[0022] When performing a performance test on clutch 1, the oil sleeve 2 is fixed and connected to the drive motor. The outer hub 12 of clutch 1 is inserted into the torque transmission sleeve 3, so that the inner gear ring is used to mesh with the teeth on the outer hub 12 of clutch 1. Then, the outer gear ring 41 of the contour inner hub 4 is inserted into clutch 1, so that the outer gear ring 41 meshes with the teeth of the friction plate assembly 13. Then, one end of the contour inner hub 4 is connected to the load motor. When the drive motor is started and clutch 1 is in the engaged state, the torque will be transmitted sequentially through the oil sleeve 2, torque transmission sleeve 3, outer hub 12, steel plate assembly, friction plate assembly 13, outer gear ring 41, contour inner hub 4 and load motor.

[0023] Pressure oil is supplied to the pressure chamber of clutch 1 through pressure oil channel 21, causing the friction plate assembly 13 and the steel plate assembly of clutch 1 to come into contact. Friction is generated between the friction plate assembly 13 and the steel plate assembly, enabling torque transmission between them, i.e., clutch 1 is in the engaged state. When the pressure oil is supplied to the pressure chamber of clutch 1, clutch 1 changes from the engaged state to the disengaged state. When clutch 1 is installed on the clutch performance testing fixture, lubricating oil passes sequentially through lubricating oil channel 22, center hole 23, lubricating oil channel 111 of rotating shaft 11, receiving groove 42, third oil outlet hole 43, first oil outlet hole 121 and second oil outlet hole 31 on outer hub 12. When clutch 1 rotates, lubricating oil, under the action of centrifugal force, wets the friction plate assembly 13 and the steel plate assembly between outer hub 12 and outer gear ring 41.

[0024] Clutch 1 is installed on the testing equipment using a clutch performance testing fixture. Pressurized oil is supplied to clutch 1 through the pressure oil flow channel 21 of the oil sleeve 2 to control the engagement and disengagement of clutch 1. Lubricating oil is supplied to clutch 1 through the lubricating oil flow channel 22 of the oil sleeve 2, which allows for performance testing of clutch 1. The lubricating oil supply to clutch 1 through the lubricating oil flow channel 22 requires only a small amount of lubricating oil to meet the lubrication and cooling requirements of clutch 1, avoiding damage to clutch 1 and ensuring the accuracy of clutch 1 performance testing.

[0025] Reference Figure 3 and Figure 4 In some embodiments, the clutch performance testing fixture also includes a connecting sleeve 5, which is fitted onto one end of the oil sleeve 2. The inner wall of the connecting sleeve 5 and the outer wall of the oil sleeve 2 form a seal. The oil sleeve 2 can rotate relative to the connecting sleeve 5. The connecting sleeve 5 is provided with a pressure oil hole and a lubricating oil hole 51. The connecting sleeve 5 is provided with a pressure oil pipe 52 and a lubricating oil pipe 53. The pressure oil pipe 52 and the lubricating oil pipe 53 are respectively connected to the pressure oil hole and the lubricating oil hole 51. Pressure oil is supplied to the pressure oil hole through the pressure oil pipe 52, and lubricating oil is supplied to the lubricating oil hole 51 through the lubricating oil pipe 53.

[0026] Both the pressure oil hole and the lubricating oil hole 51 penetrate the outer wall and the inner wall of the connecting sleeve 5, as shown in the reference. Figure 4 and Figure 7The outer wall of one end of the oil sleeve 2 is provided with an annular first pressure oil groove 24 and an annular lubricating oil groove 25. The inlet of the pressure oil flow channel 21 and the inlet of the lubricating oil flow channel 22 are respectively located at the bottom of the first pressure oil groove 24 and the bottom of the lubricating oil groove 25. The pressure oil hole, the first pressure oil groove 24 and the inlet of the pressure oil flow channel 21 are connected in sequence. The pressure oil can flow through the pressure oil pipe 52, the pressure oil hole, the first pressure oil groove 24 and the inlet of the pressure oil flow channel 21 in sequence, so that the pressure oil enters the pressure oil flow channel 21. The lubricating oil hole 51, the lubricating oil groove 25 and the inlet of the lubricating oil flow channel 22 are connected in sequence. The lubricating oil can flow through the lubricating oil pipe 53, the lubricating oil hole 51, the lubricating oil groove 25 and the inlet of the lubricating oil flow channel 22 in sequence, so that the lubricating oil enters the lubricating oil flow channel 22 and the central hole 23.

[0027] Since the oil sleeve 2 can rotate relative to the connecting sleeve 5, the connecting sleeve 5 remains stationary when the oil sleeve 2 rotates, thereby enabling the connecting sleeve 5 to provide pressure oil and lubricating oil to the rotating oil sleeve 2.

[0028] Reference Figure 4 and Figure 7 In some embodiments, an annular first limiting groove 26 is provided on the outer wall of one end of the oil sleeve 2. The first limiting groove 26 is located between the first pressure oil groove 24 and the lubricating oil groove 25. A first sealing ring is provided in the first limiting groove 26. The first sealing ring abuts against the inner wall of the connecting sleeve 5 and forms a seal. The first sealing ring can prevent the pressure oil in the first pressure oil groove 24 from entering the lubricating oil groove 25, and prevent the lubricating oil in the lubricating oil groove 25 from entering the first pressure oil groove 24, thereby avoiding contamination of the pressure oil and lubricating oil.

[0029] Reference Figure 3 In some embodiments, the bottom of the receiving groove 42 is provided with a rotatable plug 6. The plug 6 is cylindrical in shape and rests against the end face of the other end of the rotating shaft 11. The end face of the other end of the rotating shaft 11 is provided with a first lubricating oil passage outlet. The lubricating oil passage 111 is connected to the first lubricating oil passage outlet. The first lubricating oil passage outlet is far away from the lubricating oil flow channel 22. The plug 6 can rotate synchronously with the rotating shaft 11 or remain stationary, thereby sealing the first lubricating oil passage outlet and preventing the rotating shaft 11 from moving away from the oil sleeve 2. This limits the position of the rotating shaft 11 and ensures that the clutch 1 is in a normal working state.

[0030] Reference Figure 3In some embodiments, the contoured inner hub 4 has a receiving through hole at its center, and a detachable end cap 44 is provided on one end of the contoured inner hub 4. The contoured inner hub 4 and the end cap 44 form a receiving groove 42. The plug 6 is located in the receiving through hole through an angular contact ball bearing 61. The end cap 44 abuts against the angular contact ball bearing 61. When the end cap 44 is removed, the plug 6 and the angular contact ball bearing 61 can be installed or removed. When the end cap 44 is connected to one end of the contoured inner hub 4, the end cap 44 defines the position of the angular contact ball bearing 61 in the receiving through hole.

[0031] It is conceivable that the plug 6 does not abut against the end cap 44 to avoid the end cap 44 interfering with the plug 6.

[0032] In some embodiments, a retaining ring is provided at one end of the plug 6, and an annular flange is provided at the other end of the plug 6. The retaining ring and the flange respectively abut against the two ends of the inner ring of the angular contact ball bearing 61, thereby fixing the plug 6 and the inner ring of the angular contact ball bearing 61 together, that is, realizing the connection between the plug 6 and the angular contact ball bearing 61.

[0033] Reference Figure 3 In some embodiments, a first positioning shoulder is provided in the middle of the receiving through hole, and a first needle roller bearing 7 and a bushing 8 are provided in the receiving through hole. One end of the first needle roller bearing 7 abuts against the first positioning shoulder, and the other end of the first needle roller bearing 7 abuts against one end of the bushing 8. The other end of the bushing 8 abuts against the angular contact ball bearing 61. The first positioning shoulder and the end cover 44 position the first needle roller bearing 7, the bushing 8 and the angular contact ball bearing 61 in the receiving through hole and fix the relative positions between the first needle roller bearing 7, the bushing 8 and the angular contact ball bearing 61.

[0034] In some embodiments, the bottom of the receiving groove 42 is provided with a first needle roller bearing 7, and the opening of the receiving groove 42 is provided with a second needle roller bearing 9. Both the first needle roller bearing 7 and the second needle roller bearing 9 can be movably sleeved on the other end of the rotating shaft 11. The first needle roller bearing 7 and the second needle roller bearing 9 can ensure the relative position between the rotating shaft 11 and the contoured inner hub 4, so that the rotating shaft 11 and the contoured inner hub 4 can rotate relative to each other, and can avoid excessive friction between the rotating shaft 11 and the contoured inner hub 4.

[0035] Reference Figure 3 In some embodiments, the opening of the storage groove 42 is provided with a second positioning shoulder, and the side wall of the opening of the storage groove 42 is provided with a removable cover plate 45. The cover plate 45 is annular and can be fitted onto the rotating shaft 11. The two ends of the second needle roller bearing 9 abut against the second positioning shoulder and the cover plate 45 respectively. The second positioning shoulder and the cover plate 45 position the second needle roller bearing 9.

[0036] In some embodiments, the outer wall of one end of the oil sleeve 2 is also provided with a second limiting groove 27, a second pressure oil groove 28, and a third limiting groove 29, all of which are annular. The second limiting groove 27, the second pressure oil groove 28, and the third limiting groove 29 are arranged sequentially along the length of the oil sleeve 2. The outlet of the pressure oil flow channel 21 is opened at the bottom of the second pressure oil groove 28 and is opposite to the inlet of the pressure chamber. The second limiting groove 27 and the third limiting groove 29 are respectively provided with a second sealing ring and a third sealing ring. The second sealing ring and the third sealing ring abut against the outer hub 12 and form a seal. A sealed oil chamber is formed between the groove wall of the second pressure oil groove 28, the second sealing ring, the third sealing ring, and the outer hub 12. The pressure oil can flow sequentially through the pressure oil flow channel 21 and the oil chamber, and then the pressure oil enters the pressure chamber of the clutch 1.

[0037] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A clutch performance testing fixture, characterized in that, include: An oil sleeve is used for transmission connection with a drive motor. The oil sleeve is provided with a pressure oil flow channel and a lubricating oil flow channel. The pressure oil flow channel is used to communicate with the pressure chamber of the clutch. The oil sleeve is provided with a central hole that communicates with the lubricating oil flow channel. The central hole is used for one end of the clutch shaft to extend into it. The torque transmission sleeve has an internal gear ring on its inner wall, which is used to mesh with the teeth on the outer hub of the clutch. One end of the torque transmission sleeve is connected to the oil sleeve, and the internal gear ring is coaxially arranged with the center hole. The torque transmission sleeve has a plurality of circumferentially distributed second oil outlet holes, which penetrate the outer wall of the torque transmission sleeve and the tooth surface of the internal gear ring. The inner hub has a contoured design, one end of which is used for drive connection with the load motor. The other end of the inner hub is provided with an external gear ring, which meshes with the teeth of the friction plate assembly of the clutch. The end face of the other end of the inner hub is provided with a receiving groove, which allows the other end of the rotating shaft to extend into. The other end of the inner hub is provided with multiple circumferentially distributed third oil outlet holes, which penetrate the tooth surface of the external gear ring and the inner wall of the receiving groove. The central hole, the lubricating oil passage of the rotating shaft, the receiving groove, the third oil outlet holes, the first oil outlet hole and the second oil outlet hole on the outer hub are sequentially connected to form a lubricating oil channel.

2. The clutch performance testing fixture according to claim 1, characterized in that, It also includes a connecting sleeve, which is fitted onto one end of the oil sleeve. The inner wall of the connecting sleeve and the outer wall of the oil sleeve form a seal. The oil sleeve can rotate relative to the connecting sleeve. The connecting sleeve is provided with a pressure oil hole and a lubricating oil hole, both of which penetrate the outer wall and the inner wall of the connecting sleeve. The outer wall of one end of the oil sleeve is provided with an annular first pressure oil groove and an annular lubricating oil groove. The inlet of the pressure oil flow channel and the inlet of the lubricating oil flow channel are respectively located at the bottom of the first pressure oil groove and the bottom of the lubricating oil groove. The pressure oil hole, the first pressure oil groove, and the inlet of the pressure oil flow channel are connected in sequence. The lubricating oil hole, the lubricating oil groove, and the inlet of the lubricating oil flow channel are also connected in sequence.

3. The clutch performance testing fixture according to claim 2, characterized in that, The outer wall of one end of the oil sleeve is also provided with an annular first limiting groove. The first limiting groove is located between the first pressure oil groove and the lubricating oil groove. A first sealing ring is provided in the first limiting groove. The first sealing ring abuts against the inner wall of the connecting sleeve and forms a seal.

4. The clutch performance testing fixture according to claim 1, characterized in that, The bottom of the storage groove is provided with a rotatable plug, which abuts against the end face of the other end of the rotating shaft and seals the outlet of the first lubricating oil passage away from the lubricating oil flow passage.

5. The clutch performance testing fixture according to claim 4, characterized in that, The inner hub has a storage through hole at its center and a detachable end cap at one end. The inner hub and the end cap form the storage groove. The plug is located in the storage through hole via an angular contact ball bearing and the end cap abuts against the angular contact ball bearing.

6. The clutch performance testing fixture according to claim 5, characterized in that, One end of the plug is provided with a retaining ring, and the other end of the plug is provided with an annular flange. The retaining ring and the flange respectively abut against the two ends of the inner ring of the angular contact ball bearing.

7. The clutch performance testing fixture according to claim 5, characterized in that, The receiving through hole is provided with a first positioning shoulder in the middle. The receiving through hole is provided with a first needle roller bearing and a bushing. One end of the first needle roller bearing abuts against the first positioning shoulder, and the other end of the first needle roller bearing abuts against one end of the bushing. The other end of the bushing abuts against the angular contact ball bearing.

8. A clutch performance testing fixture according to claim 4 or 5, characterized in that, The bottom of the storage groove is provided with a first needle roller bearing, and the opening of the storage groove is provided with a second needle roller bearing. Both the first needle roller bearing and the second needle roller bearing can be movably sleeved on the other end of the rotating shaft.

9. A clutch performance testing fixture according to claim 8, characterized in that, The opening of the storage slot is provided with a second positioning shoulder, and the side wall of the opening of the storage slot is provided with a detachable cover plate. The cover plate is annular and can be fitted onto the rotating shaft. The two ends of the second needle roller bearing abut against the second positioning shoulder and the cover plate, respectively.

10. A clutch performance testing fixture according to claim 1, characterized in that, The outer wall of one end of the oil sleeve is also provided with a second limiting groove, a second pressure oil groove and a third limiting groove, all of which are annular. The second limiting groove, the second pressure oil groove and the third limiting groove are arranged sequentially along the length of the oil sleeve. The outlet of the pressure oil flow channel is opened at the bottom of the second pressure oil groove and is arranged opposite to the inlet of the pressure chamber. The second limiting groove and the third limiting groove are respectively provided with a second sealing ring and a third sealing ring. The second sealing ring and the third sealing ring abut against the outer hub and form a seal.

Images